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rfc:rfc5531

Network Working Group R. Thurlow Request for Comments: 5531 Sun Microsystems Obsoletes: 1831 May 2009 Category: Standards Track

    RPC: Remote Procedure Call Protocol Specification Version 2

Status of This Memo

 This document specifies an Internet standards track protocol for the
 Internet community, and requests discussion and suggestions for
 improvements.  Please refer to the current edition of the "Internet
 Official Protocol Standards" (STD 1) for the standardization state
 and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

 Copyright (c) 2009 IETF Trust and the persons identified as the
 document authors.  All rights reserved.
 This document is subject to BCP 78 and the IETF Trust's Legal
 Provisions Relating to IETF Documents in effect on the date of
 publication of this document (http://trustee.ietf.org/license-info).
 Please review these documents carefully, as they describe your rights
 and restrictions with respect to this document.

Abstract

 This document describes the Open Network Computing (ONC) Remote
 Procedure Call (RPC) version 2 protocol as it is currently deployed
 and accepted.  This document obsoletes RFC 1831.

Thurlow Standards Track [Page 1] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

Table of Contents

 1. Introduction ....................................................3
    1.1. Requirements Language ......................................3
 2. Changes since RFC 1831 ..........................................3
 3. Terminology .....................................................3
 4. The RPC Model ...................................................4
 5. Transports and Semantics ........................................5
 6. Binding and Rendezvous Independence .............................7
 7. Authentication ..................................................7
 8. RPC Protocol Requirements .......................................7
    8.1. RPC Programs and Procedures ................................8
    8.2. Authentication, Integrity, and Privacy .....................9
    8.3. Program Number Assignment .................................10
    8.4. Other Uses of the RPC Protocol ............................10
         8.4.1. Batching ...........................................10
         8.4.2. Broadcast Remote Procedure Calls ...................11
 9. The RPC Message Protocol .......................................11
 10. Authentication Protocols ......................................15
    10.1. Null Authentication ......................................15
 11. Record Marking Standard .......................................16
 12. The RPC Language ..............................................16
    12.1. An Example Service Described in the RPC Language .........17
    12.2. The RPC Language Specification ...........................18
    12.3. Syntax Notes .............................................18
 13. IANA Considerations ...........................................19
    13.1. Numbering Requests to IANA ...............................19
    13.2. Protecting Past Assignments ..............................19
    13.3. RPC Number Assignment ....................................19
         13.3.1. To be assigned by IANA ............................20
         13.3.2. Defined by Local Administrator ....................20
         13.3.3. Transient Block ...................................20
         13.3.4. Reserved Block ....................................21
         13.3.5. RPC Number Sub-Blocks .............................21
    13.4. RPC Authentication Flavor Number Assignment ..............22
         13.4.1. Assignment Policy .................................22
         13.4.2. Auth Flavors vs. Pseudo-Flavors ...................23
    13.5. Authentication Status Number Assignment ..................23
         13.5.1. Assignment Policy .................................23
 14. Security Considerations .......................................24
 Appendix A: System Authentication .................................25
 Appendix B: Requesting RPC-Related Numbers from IANA  .............26
 Appendix C: Current Number Assignments  ...........................27
 Normative References  .............................................62
 Informative References  ...........................................62

Thurlow Standards Track [Page 2] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

1. Introduction

 This document specifies version 2 of the message protocol used in ONC
 Remote Procedure Call (RPC).  The message protocol is specified with
 the eXternal Data Representation (XDR) language [RFC4506].  This
 document assumes that the reader is familiar with XDR.  It does not
 attempt to justify remote procedure call systems or describe their
 use.  The paper by Birrell and Nelson [XRPC] is recommended as an
 excellent background for the remote procedure call concept.

1.1. Requirements Language

 The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
 "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
 document are to be interpreted as described in [RFC2119].

2. Changes since RFC 1831

 This document obsoletes [RFC1831] as the authoritative document
 describing RPC, without introducing any over-the-wire protocol
 changes.  The main changes from RFC 1831 are:
 o  Addition of an Appendix that describes how an implementor can
    request new RPC program numbers, authentication flavor numbers,
    and authentication status numbers from IANA, rather than from Sun
    Microsystems
 o  Addition of an "IANA Considerations" section that describes past
    number assignment policy and how IANA is intended to assign them
    in the future
 o  Clarification of the RPC Language Specification to match current
    usage
 o  Enhancement of the "Security Considerations" section to reflect
    experience with strong security flavors
 o  Specification of new authentication errors that are in common use
    in modern RPC implementations
 o  Updates for the latest IETF intellectual property statements

3. Terminology

 This document discusses clients, calls, servers, replies, services,
 programs, procedures, and versions.  Each remote procedure call has
 two sides: an active client side that makes the call to a server
 side, which sends back a reply.  A network service is a collection of

Thurlow Standards Track [Page 3] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 one or more remote programs.  A remote program implements one or more
 remote procedures; the procedures, their parameters, and results are
 documented in the specific program's protocol specification.  A
 server may support more than one version of a remote program in order
 to be compatible with changing protocols.
 For example, a network file service may be composed of two programs.
 One program may deal with high-level applications such as file system
 access control and locking.  The other may deal with low-level file
 input and output and have procedures like "read" and "write".  A
 client of the network file service would call the procedures
 associated with the two programs of the service on behalf of the
 client.
 The terms "client" and "server" only apply to a particular
 transaction; a particular hardware entity (host) or software entity
 (process or program) could operate in both roles at different times.
 For example, a program that supplies remote execution service could
 also be a client of a network file service.

4. The RPC Model

 The ONC RPC protocol is based on the remote procedure call model,
 which is similar to the local procedure call model.  In the local
 case, the caller places arguments to a procedure in some well-
 specified location (such as a register window).  It then transfers
 control to the procedure, and eventually regains control.  At that
 point, the results of the procedure are extracted from the well-
 specified location, and the caller continues execution.
 The remote procedure call model is similar.  One thread of control
 logically winds through two processes: the caller's process and a
 server's process.  The caller first sends a call message to the
 server process and waits (blocks) for a reply message.  The call
 message includes the procedure's parameters, and the reply message
 includes the procedure's results.  Once the reply message is
 received, the results of the procedure are extracted, and the
 caller's execution is resumed.
 On the server side, a process is dormant awaiting the arrival of a
 call message.  When one arrives, the server process extracts the
 procedure's parameters, computes the results, sends a reply message,
 and then awaits the next call message.
 In this model, only one of the two processes is active at any given
 time.  However, this model is only given as an example.  The ONC RPC
 protocol makes no restrictions on the concurrency model implemented,
 and others are possible.  For example, an implementation may choose

Thurlow Standards Track [Page 4] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 to have RPC calls be asynchronous so that the client may do useful
 work while waiting for the reply from the server.  Another
 possibility is to have the server create a separate task to process
 an incoming call so that the original server can be free to receive
 other requests.
 There are a few important ways in which remote procedure calls differ
 from local procedure calls.
 o  Error handling: failures of the remote server or network must be
    handled when using remote procedure calls.
 o  Global variables and side effects: since the server does not have
    access to the client's address space, hidden arguments cannot be
    passed as global variables or returned as side effects.
 o  Performance:  remote procedures usually operate at one or more
    orders of magnitude slower than local procedure calls.
 o  Authentication: since remote procedure calls can be transported
    over unsecured networks, authentication may be necessary.
    Authentication prevents one entity from masquerading as some other
    entity.
 The conclusion is that even though there are tools to automatically
 generate client and server libraries for a given service, protocols
 must still be designed carefully.

5. Transports and Semantics

 The RPC protocol can be implemented on several different transport
 protocols.  The scope of the definition of the RPC protocol excludes
 how a message is passed from one process to another, and includes
 only the specification and interpretation of messages.  However, the
 application may wish to obtain information about (and perhaps control
 over) the transport layer through an interface not specified in this
 document.  For example, the transport protocol may impose a
 restriction on the maximum size of RPC messages, or it may be
 stream-oriented like TCP [RFC0793] with no size limit.  The client
 and server must agree on their transport protocol choices.
 It is important to point out that RPC does not try to implement any
 kind of reliability and that the application may need to be aware of
 the type of transport protocol underneath RPC.  If it knows it is
 running on top of a reliable transport such as TCP, then most of the
 work is already done for it.  On the other hand, if it is running on

Thurlow Standards Track [Page 5] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 top of an unreliable transport such as UDP [RFC0768], it must
 implement its own time-out, retransmission, and duplicate detection
 policies as the RPC protocol does not provide these services.
 Because of transport independence, the RPC protocol does not attach
 specific semantics to the remote procedures or their execution
 requirements.  Semantics can be inferred from (but should be
 explicitly specified by) the underlying transport protocol.  For
 example, consider RPC running on top of an unreliable transport such
 as UDP.  If an application retransmits RPC call messages after time-
 outs, and does not receive a reply, it cannot infer anything about
 the number of times the procedure was executed.  If it does receive a
 reply, then it can infer that the procedure was executed at least
 once.
 A server may wish to remember previously granted requests from a
 client and not regrant them, in order to insure some degree of
 execute-at-most-once semantics.  A server can do this by taking
 advantage of the transaction ID that is packaged with every RPC
 message.  The main use of this transaction ID is by the client RPC
 entity in matching replies to calls.  However, a client application
 may choose to reuse its previous transaction ID when retransmitting a
 call.  The server may choose to remember this ID after executing a
 call and not execute calls with the same ID, in order to achieve some
 degree of execute-at-most-once semantics.  The server is not allowed
 to examine this ID in any other way except as a test for equality.
 On the other hand, if using a "reliable" transport such as TCP, the
 application can infer from a reply message that the procedure was
 executed exactly once, but if it receives no reply message, it cannot
 assume that the remote procedure was not executed.  Note that even if
 a connection-oriented protocol like TCP is used, an application still
 needs time-outs and reconnections to handle server crashes.
 There are other possibilities for transports besides datagram- or
 connection-oriented protocols.  For example, a request-reply protocol
 such as [VMTP] is perhaps a natural transport for RPC.  ONC RPC
 currently uses both TCP and UDP transport protocols.  Section 11
 ("Record Marking Standard") describes the mechanism employed by ONC
 RPC to utilize a connection-oriented, stream-oriented transport such
 as TCP.  The mechanism by which future transports having different
 structural characteristics should be used to transfer ONC RPC
 messages should be specified by means of a Standards Track RFC, once
 such additional transports are defined.

Thurlow Standards Track [Page 6] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

6. Binding and Rendezvous Independence

 The act of binding a particular client to a particular service and
 transport parameters is NOT part of this RPC protocol specification.
 This important and necessary function is left up to some higher-level
 software.
 Implementors could think of the RPC protocol as the jump-subroutine
 instruction (JSR) of a network; the loader (binder) makes JSR useful,
 and the loader itself uses JSR to accomplish its task.  Likewise, the
 binding software makes RPC useful, possibly using RPC to accomplish
 this task.

7. Authentication

 The RPC protocol provides the fields necessary for a client to
 identify itself to a service, and vice-versa, in each call and reply
 message.  Security and access control mechanisms can be built on top
 of this message authentication.  Several different authentication
 protocols can be supported.  A field in the RPC header indicates
 which protocol is being used.  More information on specific
 authentication protocols is in Section 8.2, "Authentication,
 Integrity and Privacy".

8. RPC Protocol Requirements

 The RPC protocol must provide for the following:
 o  Unique specification of a procedure to be called
 o  Provisions for matching response messages to request messages
 o  Provisions for authenticating the caller to service and vice-versa
 Besides these requirements, features that detect the following are
 worth supporting because of protocol roll-over errors, implementation
 bugs, user error, and network administration:
 o  RPC protocol mismatches
 o  Remote program protocol version mismatches
 o  Protocol errors (such as misspecification of a procedure's
    parameters)
 o  Reasons why remote authentication failed
 o  Any other reasons why the desired procedure was not called

Thurlow Standards Track [Page 7] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

8.1. RPC Programs and Procedures

 The RPC call message has three unsigned-integer fields -- remote
 program number, remote program version number, and remote procedure
 number -- that uniquely identify the procedure to be called.  Program
 numbers are administered by a central authority (IANA).  Once
 implementors have a program number, they can implement their remote
 program; the first implementation would most likely have the version
 number 1 but MUST NOT be the number zero.  Because most new protocols
 evolve, a "version" field of the call message identifies which
 version of the protocol the caller is using.  Version numbers enable
 support of both old and new protocols through the same server
 process.
 The procedure number identifies the procedure to be called.  These
 numbers are documented in the specific program's protocol
 specification.  For example, a file service's protocol specification
 may state that its procedure number 5 is "read" and procedure number
 12 is "write".
 Just as remote program protocols may change over several versions,
 the actual RPC message protocol could also change.  Therefore, the
 call message also has in it the RPC version number, which is always
 equal to 2 for the version of RPC described here.
 The reply message to a request message has enough information to
 distinguish the following error conditions:
 o  The remote implementation of RPC does not support protocol version
    2.  The lowest and highest supported RPC version numbers are
    returned.
 o  The remote program is not available on the remote system.
 o  The remote program does not support the requested version number.
    The lowest and highest supported remote program version numbers
    are returned.
 o  The requested procedure number does not exist.  (This is usually a
    client-side protocol or programming error.)
 o  The parameters to the remote procedure appear to be garbage from
    the server's point of view.  (Again, this is usually caused by a
    disagreement about the protocol between client and service.)

Thurlow Standards Track [Page 8] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

8.2. Authentication, Integrity, and Privacy

 Provisions for authentication of caller to service and vice-versa are
 provided as a part of the RPC protocol.  The call message has two
 authentication fields: the credential and the verifier.  The reply
 message has one authentication field: the response verifier.  The RPC
 protocol specification defines all three fields to be the following
 opaque type (in the eXternal Data Representation (XDR) language
 [RFC4506]):
       enum auth_flavor {
          AUTH_NONE       = 0,
          AUTH_SYS        = 1,
          AUTH_SHORT      = 2,
          AUTH_DH         = 3,
          RPCSEC_GSS      = 6
          /* and more to be defined */
       };
       struct opaque_auth {
          auth_flavor flavor;
          opaque body<400>;
       };
 In other words, any "opaque_auth" structure is an "auth_flavor"
 enumeration followed by up to 400 bytes that are opaque to
 (uninterpreted by) the RPC protocol implementation.
 The interpretation and semantics of the data contained within the
 authentication fields are specified by individual, independent
 authentication protocol specifications.
 If authentication parameters were rejected, the reply message
 contains information stating why they were rejected.
 As demonstrated by RPCSEC_GSS, it is possible for an "auth_flavor" to
 also support integrity and privacy.

Thurlow Standards Track [Page 9] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

8.3. Program Number Assignment

 Program numbers are given out in groups according to the following
 chart:
           0x00000000                Reserved
           0x00000001 - 0x1fffffff   To be assigned by IANA
           0x20000000 - 0x3fffffff   Defined by local administrator
                                     (some blocks assigned here)
           0x40000000 - 0x5fffffff   Transient
           0x60000000 - 0x7effffff   Reserved
           0x7f000000 - 0x7fffffff   Assignment outstanding
           0x80000000 - 0xffffffff   Reserved
 The first group is a range of numbers administered by IANA and should
 be identical for all sites.  The second range is for applications
 peculiar to a particular site.  This range is intended primarily for
 debugging new programs.  When a site develops an application that
 might be of general interest, that application should be given an
 assigned number in the first range.  Application developers may apply
 for blocks of RPC program numbers in the first range by methods
 described in Appendix B.  The third group is for applications that
 generate program numbers dynamically.  The final groups are reserved
 for future use, and should not be used.

8.4. Other Uses of the RPC Protocol

 The intended use of this protocol is for calling remote procedures.
 Normally, each call message is matched with a reply message.
 However, the protocol itself is a message-passing protocol with which
 other (non-procedure-call) protocols can be implemented.

8.4.1. Batching

 Batching is useful when a client wishes to send an arbitrarily large
 sequence of call messages to a server.  Batching typically uses
 reliable byte stream protocols (like TCP) for its transport.  In the
 case of batching, the client never waits for a reply from the server,
 and the server does not send replies to batch calls.  A sequence of
 batch calls is usually terminated by a legitimate remote procedure
 call operation in order to flush the pipeline and get positive
 acknowledgement.

Thurlow Standards Track [Page 10] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

8.4.2. Broadcast Remote Procedure Calls

 In broadcast protocols, the client sends a broadcast call to the
 network and waits for numerous replies.  This requires the use of
 packet-based protocols (like UDP) as its transport protocol.  Servers
 that support broadcast protocols usually respond only when the call
 is successfully processed and are silent in the face of errors, but
 this varies with the application.
 The principles of broadcast RPC also apply to multicasting -- an RPC
 request can be sent to a multicast address.

9. The RPC Message Protocol

 This section defines the RPC message protocol in the XDR data
 description language [RFC4506].
       enum msg_type {
          CALL  = 0,
          REPLY = 1
       };
 A reply to a call message can take on two forms: the message was
 either accepted or rejected.
       enum reply_stat {
          MSG_ACCEPTED = 0,
          MSG_DENIED   = 1
       };
 Given that a call message was accepted, the following is the status
 of an attempt to call a remote procedure.
       enum accept_stat {
          SUCCESS       = 0, /* RPC executed successfully       */
          PROG_UNAVAIL  = 1, /* remote hasn't exported program  */
          PROG_MISMATCH = 2, /* remote can't support version #  */
          PROC_UNAVAIL  = 3, /* program can't support procedure */
          GARBAGE_ARGS  = 4, /* procedure can't decode params   */
          SYSTEM_ERR    = 5  /* e.g. memory allocation failure  */
       };
 Reasons why a call message was rejected:
       enum reject_stat {
          RPC_MISMATCH = 0, /* RPC version number != 2          */
          AUTH_ERROR = 1    /* remote can't authenticate caller */
       };

Thurlow Standards Track [Page 11] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 Why authentication failed:
    enum auth_stat {
       AUTH_OK           = 0,  /* success                        */
       /*
        * failed at remote end
        */
       AUTH_BADCRED      = 1,  /* bad credential (seal broken)   */
       AUTH_REJECTEDCRED = 2,  /* client must begin new session  */
       AUTH_BADVERF      = 3,  /* bad verifier (seal broken)     */
       AUTH_REJECTEDVERF = 4,  /* verifier expired or replayed   */
       AUTH_TOOWEAK      = 5,  /* rejected for security reasons  */
       /*
        * failed locally
        */
       AUTH_INVALIDRESP  = 6,  /* bogus response verifier        */
       AUTH_FAILED       = 7,  /* reason unknown                 */
       /*
        * AUTH_KERB errors; deprecated.  See [RFC2695]
        */
       AUTH_KERB_GENERIC = 8,  /* kerberos generic error */
       AUTH_TIMEEXPIRE = 9,    /* time of credential expired */
       AUTH_TKT_FILE = 10,     /* problem with ticket file */
       AUTH_DECODE = 11,       /* can't decode authenticator */
       AUTH_NET_ADDR = 12,     /* wrong net address in ticket */
       /*
        * RPCSEC_GSS GSS related errors
        */
       RPCSEC_GSS_CREDPROBLEM = 13, /* no credentials for user */
       RPCSEC_GSS_CTXPROBLEM = 14   /* problem with context */
    };
 As new authentication mechanisms are added, there may be a need for
 more status codes to support them.  IANA will hand out new auth_stat
 numbers on a simple First Come First Served basis as defined in the
 "IANA Considerations" and Appendix B.
 The RPC message:
 All messages start with a transaction identifier, xid, followed by a
 two-armed discriminated union.  The union's discriminant is a
 msg_type that switches to one of the two types of the message.  The
 xid of a REPLY message always matches that of the initiating CALL
 message.  NB: The "xid" field is only used for clients matching reply
 messages with call messages or for servers detecting retransmissions;
 the service side cannot treat this id as any type of sequence number.

Thurlow Standards Track [Page 12] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

       struct rpc_msg {
          unsigned int xid;
          union switch (msg_type mtype) {
          case CALL:
             call_body cbody;
          case REPLY:
             reply_body rbody;
          } body;
       };
 Body of an RPC call:
 In version 2 of the RPC protocol specification, rpcvers MUST be equal
 to 2.  The fields "prog", "vers", and "proc" specify the remote
 program, its version number, and the procedure within the remote
 program to be called.  After these fields are two authentication
 parameters: cred (authentication credential) and verf (authentication
 verifier).  The two authentication parameters are followed by the
 parameters to the remote procedure, which are specified by the
 specific program protocol.
 The purpose of the authentication verifier is to validate the
 authentication credential.  Note that these two items are
 historically separate, but are always used together as one logical
 entity.
      struct call_body {
         unsigned int rpcvers;       /* must be equal to two (2) */
         unsigned int prog;
         unsigned int vers;
         unsigned int proc;
         opaque_auth cred;
         opaque_auth verf;
         /* procedure-specific parameters start here */
      };
 Body of a reply to an RPC call:
       union reply_body switch (reply_stat stat) {
       case MSG_ACCEPTED:
          accepted_reply areply;
       case MSG_DENIED:
          rejected_reply rreply;
       } reply;

Thurlow Standards Track [Page 13] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 Reply to an RPC call that was accepted by the server:
 There could be an error even though the call was accepted.  The first
 field is an authentication verifier that the server generates in
 order to validate itself to the client.  It is followed by a union
 whose discriminant is an enum accept_stat.  The SUCCESS arm of the
 union is protocol-specific.  The PROG_UNAVAIL, PROC_UNAVAIL,
 GARBAGE_ARGS, and SYSTEM_ERR arms of the union are void.  The
 PROG_MISMATCH arm specifies the lowest and highest version numbers of
 the remote program supported by the server.
       struct accepted_reply {
          opaque_auth verf;
          union switch (accept_stat stat) {
          case SUCCESS:
             opaque results[0];
             /*
              * procedure-specific results start here
              */
           case PROG_MISMATCH:
              struct {
                 unsigned int low;
                 unsigned int high;
              } mismatch_info;
           default:
              /*
               * Void.  Cases include PROG_UNAVAIL, PROC_UNAVAIL,
               * GARBAGE_ARGS, and SYSTEM_ERR.
               */
              void;
           } reply_data;
       };
 Reply to an RPC call that was rejected by the server:
 The call can be rejected for two reasons: either the server is not
 running a compatible version of the RPC protocol (RPC_MISMATCH) or
 the server rejects the identity of the caller (AUTH_ERROR).  In case
 of an RPC version mismatch, the server returns the lowest and highest
 supported RPC version numbers.  In case of invalid authentication,
 failure status is returned.

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       union rejected_reply switch (reject_stat stat) {
       case RPC_MISMATCH:
          struct {
             unsigned int low;
             unsigned int high;
          } mismatch_info;
       case AUTH_ERROR:
          auth_stat stat;
       };

10. Authentication Protocols

 As previously stated, authentication parameters are opaque, but
 open-ended to the rest of the RPC protocol.  This section defines two
 standard flavors of authentication.  Implementors are free to invent
 new authentication types, with the same rules of flavor number
 assignment as there are for program number assignment.  The flavor of
 a credential or verifier refers to the value of the "flavor" field in
 the opaque_auth structure.  Flavor numbers, like RPC program numbers,
 are also administered centrally, and developers may assign new flavor
 numbers by methods described in Appendix B.  Credentials and
 verifiers are represented as variable-length opaque data (the "body"
 field in the opaque_auth structure).
 In this document, two flavors of authentication are described.  Of
 these, Null authentication (described in the next subsection) is
 mandatory -- it MUST be available in all implementations.  System
 authentication (AUTH_SYS) is described in Appendix A.  Implementors
 MAY include AUTH_SYS in their implementations to support existing
 applications.  See "Security Considerations" for information about
 other, more secure, authentication flavors.

10.1. Null Authentication

 Often, calls must be made where the client does not care about its
 identity or the server does not care who the client is.  In this
 case, the flavor of the RPC message's credential, verifier, and reply
 verifier is "AUTH_NONE".  Opaque data associated with "AUTH_NONE" is
 undefined.  It is recommended that the length of the opaque data be
 zero.

Thurlow Standards Track [Page 15] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

11. Record Marking Standard

 When RPC messages are passed on top of a byte stream transport
 protocol (like TCP), it is necessary to delimit one message from
 another in order to detect and possibly recover from protocol errors.
 This is called record marking (RM).  One RPC message fits into one RM
 record.
 A record is composed of one or more record fragments.  A record
 fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
 fragment data.  The bytes encode an unsigned binary number; as with
 XDR integers, the byte order is from highest to lowest.  The number
 encodes two values -- a boolean that indicates whether the fragment
 is the last fragment of the record (bit value 1 implies the fragment
 is the last fragment) and a 31-bit unsigned binary value that is the
 length in bytes of the fragment's data.  The boolean value is the
 highest-order bit of the header; the length is the 31 low-order bits.
 (Note that this record specification is NOT in XDR standard form!)

12. The RPC Language

 Just as there was a need to describe the XDR data-types in a formal
 language, there is also need to describe the procedures that operate
 on these XDR data-types in a formal language as well.  The RPC
 language is an extension to the XDR language, with the addition of
 "program", "procedure", and "version" declarations.  The keywords
 "program" and "version" are reserved in the RPC language, and
 implementations of XDR compilers MAY reserve these keywords even when
 provided with pure XDR, non-RPC, descriptions.  The following example
 is used to describe the essence of the language.

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12.1. An Example Service Described in the RPC Language

 Here is an example of the specification of a simple ping program.
    program PING_PROG {
          /*
           * Latest and greatest version
           */
          version PING_VERS_PINGBACK {
             void
             PINGPROC_NULL(void) = 0;
             /*
              * Ping the client, return the round-trip time
              * (in microseconds).  Returns -1 if the operation
              * timed out.
              */
             int
             PINGPROC_PINGBACK(void) = 1;
          } = 2;
          /*
           * Original version
           */
          version PING_VERS_ORIG {
             void
             PINGPROC_NULL(void) = 0;
          } = 1;
       } = 1;
       const PING_VERS = 2;      /* latest version */
 The first version described is PING_VERS_PINGBACK with two
 procedures: PINGPROC_NULL and PINGPROC_PINGBACK.  PINGPROC_NULL takes
 no arguments and returns no results, but it is useful for computing
 round-trip times from the client to the server and back again.  By
 convention, procedure 0 of any RPC protocol should have the same
 semantics and never require any kind of authentication.  The second
 procedure is used for the client to have the server do a reverse ping
 operation back to the client, and it returns the amount of time (in
 microseconds) that the operation used.  The next version,
 PING_VERS_ORIG, is the original version of the protocol, and it does
 not contain the PINGPROC_PINGBACK procedure.  It is useful for
 compatibility with old client programs, and as this program matures,
 it may be dropped from the protocol entirely.

Thurlow Standards Track [Page 17] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

12.2. The RPC Language Specification

 The RPC language is identical to the XDR language defined in RFC
 4506, except for the added definition of a "program-def", described
 below.
    program-def:
       "program" identifier "{"
          version-def
          version-def *
       "}" "=" constant ";"
    version-def:
       "version" identifier "{"
           procedure-def
           procedure-def *
       "}" "=" constant ";"
    procedure-def:
       proc-return identifier "(" proc-firstarg
         ("," type-specifier )* ")" "=" constant ";"
    proc-return: "void" | type-specifier
    proc-firstarg: "void" | type-specifier

12.3. Syntax Notes

 o  The following keywords are added and cannot be used as
    identifiers: "program" and "version".
 o  A version name cannot occur more than once within the scope of a
    program definition.  Neither can a version number occur more than
    once within the scope of a program definition.
 o  A procedure name cannot occur more than once within the scope of a
    version definition.  Neither can a procedure number occur more
    than once within the scope of version definition.
 o  Program identifiers are in the same name space as constant and
    type identifiers.
 o  Only unsigned constants can be assigned to programs, versions, and
    procedures.
 o  Current RPC language compilers do not generally support more than
    one type-specifier in procedure argument lists; the usual practice
    is to wrap arguments into a structure.

Thurlow Standards Track [Page 18] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

13. IANA Considerations

 The assignment of RPC program numbers, authentication flavor numbers,
 and authentication status numbers has in the past been performed by
 Sun Microsystems, Inc (Sun).  This is inappropriate for an IETF
 Standards Track protocol, as such work is done well by the Internet
 Assigned Numbers Authority (IANA).  This document proposes the
 transfer of authority over RPC program numbers, authentication flavor
 numbers, and authentication status numbers described here from Sun
 Microsystems, Inc. to IANA and describes how IANA will maintain and
 assign these numbers.  Users of RPC protocols will benefit by having
 an independent body responsible for these number assignments.

13.1. Numbering Requests to IANA

 Appendix B of this document describes the information to be sent to
 IANA to request one or more RPC numbers and the rules that apply.
 IANA will store the request for documentary purposes and put the
 following information into the public registry:
 o  The short description of purpose and use
 o  The program number(s) assigned
 o  The short identifier string(s)

13.2. Protecting Past Assignments

 Sun has made assignments in both the RPC program number space and the
 RPC authentication flavor number space since the original deployment
 of RPC.  The assignments made by Sun Microsystems are still valid,
 and will be preserved.  Sun has communicated all current assignments
 in both number spaces to IANA and final handoff of number assignment
 is complete.  Current program and auth number assignments are
 provided in Appendix C.  Current authentication status numbers are
 listed in Section 9 of this document in the "enum auth_stat"
 definition.

13.3. RPC Number Assignment

 Future IANA practice will deal with the following partitioning of the
 32-bit number space as listed in Section 8.3.  Detailed information
 for the administration of the partitioned blocks in Section 8.3 is
 given below.

Thurlow Standards Track [Page 19] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

13.3.1. To Be Assigned By IANA

 The first block will be administered by IANA, with previous
 assignments by Sun protected.  Previous assignments were restricted
 to the range decimal 100000-399999 (0x000186a0 to 0x00061a7f);
 therefore, IANA will begin assignments at decimal 400000.  Individual
 numbers should be grated on a First Come First Served basis, and
 blocks should be granted under rules related to the size of the
 block.

13.3.2. Defined by Local Administrator

 The "Defined by local administrator" block is available for any local
 administrative domain to use, in a similar manner to IP address
 ranges reserved for private use.  The expected use would be through
 the establishment of a local domain "authority" for assigning numbers
 from this range.  This authority would establish any policies or
 procedures to be used within that local domain for use or assignment
 of RPC numbers from the range.  The local domain should be
 sufficiently isolated that it would be unlikely that RPC applications
 developed by other local domains could communicate with the domain.
 This could result in RPC number contention, which would cause one of
 the applications to fail.  In the absence of a local administrator,
 this block can be utilized in a "Private Use" manner per [RFC5226].

13.3.3. Transient Block

 The "Transient" block can be used by any RPC application on an "as
 available" basis.  This range is intended for services that can
 communicate a dynamically selected RPC program number to clients of
 the service.  Any mechanism can be used to communicate the number.
 For example, either shared memory when the client and server are
 located on the same system or a network message (either RPC or
 otherwise) that disseminates the selected number can be used.
 The transient block is not administered.  An RPC service uses this
 range by selecting a number in the transient range and attempting to
 register that number with the local system's RPC bindery (see the
 RPCBPROC_SET or PMAPPROC_SET procedures in "Binding Protocols for ONC
 RPC Version 2", [RFC1833]).  If successful, no other RPC service was
 using that number and the RPC Bindery has assigned that number to the
 requesting RPC application.  The registration is valid until the RPC
 Bindery terminates, which normally would only happen if the system
 reboots, causing all applications, including the RPC service using
 the transient number, to terminate.  If the transient number
 registration fails, another RPC application is using the number and

Thurlow Standards Track [Page 20] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 the requestor must select another number and try again.  To avoid
 conflicts, the recommended method is to select a number randomly from
 the transient range.

13.3.4. Reserved Block

 The "Reserved" blocks are available for future use.  RPC applications
 must not use numbers in these ranges unless their use is allowed by
 future action by the IESG.

13.3.5. RPC Number Sub-Blocks

 RPC numbers are usually assigned for specific RPC services.  Some
 applications, however, require multiple RPC numbers for a service.
 The most common example is an RPC service that needs to have multiple
 instances of the service active simultaneously at a specific site.
 RPC does not have an "instance identifier" in the protocol, so either
 a mechanism must be implemented to multiplex RPC requests amongst
 various instances of the service or unique RPC numbers must be used
 by each instance.
 In these cases, the RPC protocol used with the various numbers may be
 different or the same.  The numbers may either be assigned
 dynamically by the application, or as part of a site-specific
 administrative decision.  If possible, RPC services that dynamically
 assign RPC numbers should use the "Transient" RPC number block
 defined in Section 13.3.3.  If not possible, RPC number sub-blocks
 may be requested.
 Assignment of RPC Number Sub-Blocks is controlled by the size of the
 sub-block being requested.  "Specification Required" and "IESG
 Approval" are used as defined by Section 4.1 of [RFC5226].
 Size of sub-block        Assignment Method         Authority
 -----------------        -----------------         ---------
 Up to 100 numbers        First Come First Served   IANA
 Up to 1000 numbers       Specification Required    IANA
 More than 1000 numbers   IESG Approval required    IESG
 Note: sub-blocks can be any size.  The limits given above are
 maximums, and smaller size sub-blocks are allowed.
 Sub-blocks sized up to 100 numbers may be assigned by IANA on a First
 Come First Served basis.  The RPC Service Description included in the
 range must include an indication of how the sub-block is managed.  At
 a minimum, the statement should indicate whether the sub-block is

Thurlow Standards Track [Page 21] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 used with a single RPC protocol or multiple RPC protocols, and
 whether the numbers are dynamically assigned or statically (through
 administrative action) assigned.
 Sub-blocks of up to 1000 numbers must be documented in detail.  The
 documentation must describe the RPC protocol or protocols that are to
 be used in the range.  It must also describe how the numbers within
 the sub-block are to be assigned or used.
 Sub-blocks sized over 1000 numbers must be documented as described
 above, and the assignment must be approved by the IESG.  It is
 expected that this will be rare.
 In order to avoid multiple requests of large blocks of numbers, the
 following rule is proposed.
 Requests up to and including 100 RPC numbers are handled via the
 First Come First Served assignment method.  This 100 number threshold
 applies to the total number of RPC numbers assigned to an individual
 or entity.  For example, if an individual or entity first requests,
 say, 70 numbers, and then later requests 40 numbers, then the request
 for the 40 numbers will be assigned via the Specification Required
 method.  As long as the total number of numbers assigned does not
 exceed 1000, IANA is free to waive the Specification Required
 assignment for incremental requests of less than 100 numbers.
 If an individual or entity has under 1000 numbers and later requests
 an additional set of numbers such that the individual or entity would
 be granted over 1000 numbers, then the additional request will
 require IESG Approval.

13.4. RPC Authentication Flavor Number Assignment

 The second number space is the authentication mechanism identifier,
 or "flavor", number.  This number is used to distinguish between
 various authentication mechanisms that can be optionally used with an
 RPC message.  An authentication identifier is used in the "flavor"
 field of the "opaque_auth" structure.

13.4.1. Assignment Policy

 Appendix B of this document describes the information to be sent to
 IANA to request one or more RPC auth numbers and the rules that
 apply.  IANA will store the request for documentary purposes and put
 the following information into the public registry:

Thurlow Standards Track [Page 22] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 o  The short identifier string(s)
 o  The auth number(s) assigned
 o  The short description of purpose and use

13.4.2. Auth Flavors vs. Pseudo-Flavors

 Recent progress in RPC security has moved away from new auth flavors
 as used by AUTH_DH [DH], and has focused on using the existing
 RPCSEC_GSS [RFC2203] flavor and inventing novel GSS-API (Generic
 Security Services Application Programming Interface) mechanisms that
 can be used with it.  Even though RPCSEC_GSS is an assigned
 authentication flavor, use of a new RPCSEC_GSS mechanism with the
 Network File System (NFS) ([RFC1094] [RFC1813], and [RFC3530]) will
 require the registration of 'pseudo-flavors' that are used to
 negotiate security mechanisms in an unambiguous way, as defined by
 [RFC2623].  Existing pseudo-flavors have been granted in the decimal
 range 390000-390255.  New pseudo-flavor requests will be granted by
 IANA within this block on a First Come First Served basis.
 For non-pseudo-flavor requests, IANA will begin granting RPC
 authentication flavor numbers at 400000 on a First Come First Served
 basis to avoid conflicts with currently granted numbers.
 For authentication flavors or RPCSEC_GSS mechanisms to be used on the
 Internet, it is strongly advised that an Informational or Standards
 Track RFC be published describing the authentication mechanism
 behaviour and parameters.

13.5. Authentication Status Number Assignment

 The final number space is the authentication status or "auth_stat"
 values that describe the nature of a problem found during an attempt
 to authenticate or validate authentication.  The complete initial
 list of these values is found in Section 9 of this document, in the
 "auth_stat" enum listing.  It is expected that it will be rare to add
 values, but that a small number of new values may be added from time
 to time as new authentication flavors introduce new possibilities.
 Numbers should be granted on a First Come First Served basis to avoid
 conflicts with currently granted numbers.

13.5.1. Assignment Policy

 Appendix B of this document describes the information to be sent to
 IANA to request one or more auth_stat values and the rules that
 apply.  IANA will store the request for documentary purposes, and put
 the following information into the public registry:

Thurlow Standards Track [Page 23] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 o  The short identifier string(s)
 o  The auth_stat number(s) assigned
 o  The short description of purpose and use

14. Security Considerations

 AUTH_SYS as described in Appendix A is known to be insecure due to
 the lack of a verifier to permit the credential to be validated.
 AUTH_SYS SHOULD NOT be used for services that permit clients to
 modify data.  AUTH_SYS MUST NOT be specified as RECOMMENDED or
 REQUIRED for any Standards Track RPC service.
 AUTH_DH as mentioned in Sections 8.2 and 13.4.2 is considered
 obsolete and insecure; see [RFC2695].  AUTH_DH SHOULD NOT be used for
 services that permit clients to modify data.  AUTH_DH MUST NOT be
 specified as RECOMMENDED or REQUIRED for any Standards Track RPC
 service.
 [RFC2203] defines a new security flavor, RPCSEC_GSS, which permits
 GSS-API [RFC2743] mechanisms to be used for securing RPC.  All non-
 trivial RPC programs developed in the future should implement
 RPCSEC_GSS-based security appropriately.  [RFC2623] describes how
 this was done for a widely deployed RPC program.
 Standards Track RPC services MUST mandate support for RPCSEC_GSS, and
 MUST mandate support for an authentication pseudo-flavor with
 appropriate levels of security, depending on the need for simple
 authentication, integrity (a.k.a. non-repudiation), or data privacy.

Thurlow Standards Track [Page 24] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

Appendix A: System Authentication

 The client may wish to identify itself, for example, as it is
 identified on a UNIX(tm) system.  The flavor of the client credential
 is "AUTH_SYS".  The opaque data constituting the credential encodes
 the following structure:
       struct authsys_parms {
          unsigned int stamp;
          string machinename<255>;
          unsigned int uid;
          unsigned int gid;
          unsigned int gids<16>;
       };
 The "stamp" is an arbitrary ID that the caller machine may generate.
 The "machinename" is the name of the caller's machine (like
 "krypton").  The "uid" is the caller's effective user ID.  The "gid"
 is the caller's effective group ID.  "gids" are a counted array of
 groups that contain the caller as a member.  The verifier
 accompanying the credential should have "AUTH_NONE" flavor value
 (defined above).  Note that this credential is only unique within a
 particular domain of machine names, uids, and gids.
 The flavor value of the verifier received in the reply message from
 the server may be "AUTH_NONE" or "AUTH_SHORT".  In the case of
 "AUTH_SHORT", the bytes of the reply verifier's string encode an
 opaque structure.  This new opaque structure may now be passed to the
 server instead of the original "AUTH_SYS" flavor credential.  The
 server may keep a cache that maps shorthand opaque structures (passed
 back by way of an "AUTH_SHORT" style reply verifier) to the original
 credentials of the caller.  The caller can save network bandwidth and
 server cpu cycles by using the shorthand credential.
 The server may flush the shorthand opaque structure at any time.  If
 this happens, the remote procedure call message will be rejected due
 to an authentication error.  The reason for the failure will be
 "AUTH_REJECTEDCRED".  At this point, the client may wish to try the
 original "AUTH_SYS" style of credential.
 It should be noted that use of this flavor of authentication does not
 guarantee any security for the users or providers of a service, in
 itself.  The authentication provided by this scheme can be considered
 legitimate only when applications using this scheme and the network
 can be secured externally, and privileged transport addresses are
 used for the communicating end-points (an example of this is the use
 of privileged TCP/UDP ports in UNIX systems -- note that not all
 systems enforce privileged transport address mechanisms).

Thurlow Standards Track [Page 25] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

Appendix B: Requesting RPC-Related Numbers from IANA

 RPC program numbers, authentication flavor numbers, and
 authentication status numbers that must be unique across all networks
 are assigned by the Internet Assigned Number Authority.  To apply for
 a single number or a block of numbers, electronic mail must be sent
 to IANA <iana@iana.org> with the following information:
 o  The type of number(s) (program number or authentication flavor
    number or authentication status number) sought
 o  How many numbers are sought
 o  The name of the person or company that will use the number
 o  An "identifier string" that associates the number with a service
 o  Email address of the contact person for the service that will be
    using the number
 o  A short description of the purpose and use of the number
 o  If an authentication flavor number is sought, and the number will
    be a 'pseudo-flavor' intended for use with RPCSEC_GSS and NFS,
    mappings analogous to those in Section 4.2 of [RFC2623]
 Specific numbers cannot be requested.  Numbers are assigned on a
 First Come First Served basis.
 For all RPC authentication flavor and authentication status numbers
 to be used on the Internet, it is strongly advised that an
 Informational or Standards Track RFC be published describing the
 authentication mechanism behaviour and parameters.

Thurlow Standards Track [Page 26] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

Appendix C: Current Number Assignments

 #
 # Sun-assigned RPC numbers
 #
 # Description/Owner        RPC Program Number        Short Name
 # -----------------------------------------------------------------
 portmapper                         100000    pmapprog portmap rpcbind
 remote stats                       100001    rstatprog
 remote users                       100002    rusersprog
 nfs                                100003    nfs
 yellow pages (NIS)                 100004    ypprog ypserv
 mount demon                        100005    mountprog
 remote dbx                         100006    dbxprog
 yp binder (NIS)                    100007    ypbindprog ypbind
 shutdown msg                       100008    wall
 yppasswd server                    100009    yppasswdprog yppasswdd
 ether stats                        100010    etherstatprog
 disk quotas                        100011    rquota
 spray packets                      100012    spray
 3270 mapper                        100013    ibm3270prog
 RJE mapper                         100014    ibmrjeprog
 selection service                  100015    selnsvcprog
 remote database access             100016    rdatabaseprog
 remote execution                   100017    rexec
 Alice Office Automation            100018    aliceprog
 scheduling service                 100019    schedprog
 local lock manager                 100020    lockprog llockmgr
 network lock manager               100021    netlockprog nlockmgr
 x.25 inr protocol                  100022    x25prog
 status monitor 1                   100023    statmon1
 status monitor 2                   100024    statmon2
 selection library                  100025    selnlibprog
 boot parameters service            100026    bootparam
 mazewars game                      100027    mazeprog
 yp update (NIS)                    100028    ypupdateprog ypupdate
 key server                         100029    keyserveprog
 secure login                       100030    securecmdprog
 nfs net forwarder init             100031    netfwdiprog
 nfs net forwarder trans            100032    netfwdtprog
 sunlink MAP                        100033    sunlinkmap
 network monitor                    100034    netmonprog
 lightweight database               100035    dbaseprog
 password authorization             100036    pwdauthprog
 translucent file svc               100037    tfsprog
 nse server                         100038    nseprog
 nse activate daemon                100039    nse_activate_prog
 sunview help                       100040    sunview_help_prog

Thurlow Standards Track [Page 27] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 pnp install                        100041    pnp_prog
 ip addr allocator                  100042    ipaddr_alloc_prog
 show filehandle                    100043    filehandle
 MVS NFS mount                      100044    mvsnfsprog
 remote user file operations        100045    rem_fileop_user_prog
 batched ypupdate                   100046    batch_ypupdateprog
 network execution mgr              100047    nem_prog
 raytrace/mandelbrot remote daemon  100048    raytrace_rd_prog
 raytrace/mandelbrot local daemon   100049    raytrace_ld_prog
 remote group file operations       100050    rem_fileop_group_prog
 remote system file operations      100051    rem_fileop_system_prog
 remote system role operations      100052    rem_system_role_prog
 gpd lego fb simulator              100053    [unknown]
 gpd simulator interface            100054    [unknown]
 ioadmd                             100055    ioadmd
 filemerge                          100056    filemerge_prog
 Name Binding Program               100057    namebind_prog
 sunlink NJE                        100058    njeprog
 MVSNFS get attribute service       100059    mvsattrprog
 SunAccess/SunLink resource manager 100060    rmgrprog
 UID allocation service             100061    uidallocprog
 license broker                     100062    lbserverprog
 NETlicense client binder           100063    lbbinderprog
 GID allocation service             100064    gidallocprog
 SunIsam                            100065    sunisamprog
 Remote Debug Server                100066    rdbsrvprog
 Network Directory Daemon           100067    [unknown]
 Network Calendar Program           100068    cmsd cm
 ypxfrd                             100069    ypxfrd
 rpc.timed                          100070    timedprog
 bugtraqd                           100071    bugtraqd
                                    100072    [unknown]
 Connectathon Billboard - NFS       100073    [unknown]
 Connectathon Billboard - X         100074    [unknown]
 Sun tool for scheduling rooms      100075    schedroom
 Authentication Negotiation         100076    authnegotiate_prog
 Database manipulation              100077    attribute_prog
 Kerberos authentication daemon     100078    kerbprog
 Internal testing product (no name) 100079    [unknown]
 Sun Consulting Special             100080    autodump_prog
 Event protocol                     100081    event_svc
 bugtraq_qd                         100082    bugtraq_qd
 ToolTalk and Link Service Project  100083    database service
 Consulting Services                100084    [unknown]
 Consulting Services                100085    [unknown]
 Consulting Services                100086    [unknown]
 Jupiter Administration             100087    adm_agent admind
                                    100088    [unknown]

Thurlow Standards Track [Page 28] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    100089    [unknown]
 Dual Disk support                  100090    libdsd/dsd
 DocViewer 1.1                      100091    [unknown]
 ToolTalk                           100092    remote_activation_svc
 Consulting Services                100093    host_checking
 SNA peer-to-peer                   100094    [unknown]
 Roger Riggs                        100095    searchit
 Robert Allen                       100096    mesgtool
 SNA                                100097    [unknown]
 SISU                               100098    networked version of CS5
 NFS Automount File System          100099    autofs
                                    100100    msgboard
 event dispatching agent [eventd]   100101    netmgt_eventd_prog
 statistics/event logger [netlogd]  100102    netmgt_netlogd_prog
 topology display manager [topology]100103    netmgt_topology_prog
 syncstat agent [syncstatd]         100104    netmgt_syncstatd_prog
 ip packet stats agent [ippktd]     100105    netmgt_ippktd_prog
 netmgt config agent [configd]      100106    netmgt_configd_prog
 restat agent [restatd]             100107    netmgt_restatd_prog
 lpq agent [lprstatd]               100108    netmgt_lprstatd_prog
 netmgt activity agent [mgtlogd]    100109    netmgt_mgtlogd_prog
 proxy DECnet NCP agent [proxydni]  100110    netmgt_proxydni_prog
 topology mapper agent [mapperd]    100111    netmgt_mapperd_prog
 netstat agent [netstatd]           100112    netmgt_netstatd_prog
 sample netmgt agent [sampled]      100113    netmgt_sampled_prog
 X.25 statistics agent [vcstatd]    100114    netmgt_vcstatd_prog
 Frame Relay                        100128    [unknown]
 PPP agent                          100129    [unknown]
 localhad                           100130    rpc.localhad
 layers2                            100131    na.layers2
 token ring agent                   100132    na.tr
 related to lockd and statd         100133    nsm_addr
 Kerberos project                   100134    kwarn
 ertherif2                          100135    na.etherif2
 hostmem2                           100136    na.hostmem2
 iostat2                            100137    na.iostat2
 snmpv2                             100138    na.snmpv2
 Cooperative Console                100139    cc_sender
 na.cpustat                         100140    na.cpustat
 Sun Cluster SC3.0                  100141    rgmd_receptionist
                                    100142    fed
 Network Storage                    100143    rdc
 Sun Cluster products               100144    nafo
 SunCluster 3.0                     100145    scadmd
 ASN.1                              100146    amiserv
                                    100147    amiaux # BER and DER
                                               encode and decode
 Delegate Management Server         100148    dm

Thurlow Standards Track [Page 29] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    100149    rkstat
                                    100150    ocfserv
                                    100151    sccheckd
                                    100152    autoclientd
                                    100153    sunvts
                                    100154    ssmond
                                    100155    smserverd
                                    100156    test1
                                    100157    test2
                                    100158    test3
                                    100159    test4
                                    100160    test5
                                    100161    test6
                                    100162    test7
                                    100163    test8
                                    100164    test9
                                    100165    test10
                                    100166    nfsmapid
                                    100167    SUN_WBEM_C_CIMON_HANDLE
                                    100168    sacmmd
                                    100169    fmd_adm
                                    100170    fmd_api
                                    100171    [unknown]
                                    100172    idmapd
 unassigned                         100173 - 100174
 snmptrap                           100175    na.snmptrap
 unassigned                         100176-100199
 unassigned                         100200
 MVS/NFS Memory usage stats server  100201    [unknown]
 Netapp                             100202-100207
 unassigned                         100208-100210
 8.0 SunLink SNA RJE                100211    [unknown]
 8.0 SunLink SNA RJE                100212    [unknown]
                                    100213    ShowMe
                                    100214    [unknown]
                                    100215    [unknown]
 AUTH_RSA Key service               100216    keyrsa
 SunSelect PC license service       100217    [unknown]
 WWCS (Corporate)                   100218    sunsolve
                                    100219    cstatd
 X/Open Federated Naming            100220    xfn_server_prog
 Kodak Color Management System      100221    kcs_network_io kcs
 HA-DBMS                            100222    ha_dbms_serv
                                    100223-100225    [unknown]
                                    100226    hafaultd
 NFS ACL Service                    100227    nfs_acl
 distributed lock manager           100228    dlmd

Thurlow Standards Track [Page 30] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    100229    metad
                                    100230    metamhd
                                    100231    nfsauth
                                    100232    sadmind
                                    100233    ufsd
                                    100234    grpservd
                                    100235    cachefsd
                                    100236    msmprog Media_Server
                                    100237    ihnamed
                                    100238    ihnetd
                                    100239    ihsecured
                                    100240    ihclassmgrd
                                    100241    ihrepositoryd
                                    100242    metamedd rpc.metamedd
                                    100243    contentmanager cm
                                    100244    symon
                                    100245    pld genesil
                                    100246    ctid
                                          cluster_transport_interface
                                    100247    ccd
                                          cluster_configuration_db
                                    100248    pmfd
                                    100249    dmi2_client
                                    100250    mfs_admin
                                    100251    ndshared_unlink
                                    100252    ndshared_touch
                                    100253    ndshared_slink
                                    100254    cbs control_board_server
                                    100255    skiserv
                                    100256    nfsxa nfsxattr
                                    100257    ndshared_disable
                                    100258    ndshared_enable
                                    100259    sms_account_admin
                                    100260    sms_modem_admin
                                    100261    sms_r_login
                                    100262    sms_r_subaccount_mgt
                                    100263    sms_service_admin
                                    100264    session_admin
                                    100265    canci_ancs_program
                                    100266    canci_sms_program
                                    100267    msmp
                                    100268    halck
                                    100269    halogmsg
                                    100270    nfs_id_map
                                    100271    ncall
                                    100272    hmip
                                    100273    repl_mig
                                    100274    repl_mig_cb

Thurlow Standards Track [Page 31] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 NIS+                               100300    nisplus
 NIS+                               100301    nis_cachemgr
 NIS+ call back protocol            100302    [unknown]
 NIS+ Password Update Daemon        100303    nispasswdd
 FNS context update in NIS          100304    fnsypd
                                    100305    [unknown]
                                    100306    [unknown]
                                    100307    [unknown]
                                    100308    [unknown]
                                    100309    [unknown]
 unassigned                         100310 - 100398
 nfscksum                           100399    nfscksum
 network utilization agent          100400    netmgt_netu_prog
 network rpc ping agent             100401    netmgt_rping_prog
                                    100402    na.shell
 picsprint                          100403    na.picslp
                                    100404    traps
                                    100405 - 100409 [unknown]
                                    100410    jdsagent
                                    100411    na.haconfig
                                    100412    na.halhost
                                    100413    na.hadtsrvc
                                    100414    na.hamdstat
                                    100415    na.neoadmin
                                    100416    ex1048prog
 rdmaconfig                         100417    rpc.rdmaconfig
 IETF NFSv4 Working Group - FedFS   100418 - 100421
                                    100422    mdcommd
                                    100423    kiprop krb5_iprop
                                    100424    stsf
 unassigned                         100425 - 100499
 Sun Microsystems                   100500 - 100531 [unknown]
                                    100532    ucmmstate
                                    100533    scrcmd
 unassigned                         100534 - 100999
 nse link daemon                    101002    nselinktool
 nse link application               101003    nselinkapp
 unassigned                         101004 - 101900
                                    101901    [unknown]
 unassigned                         101902 - 101999
 AssetLite                          102000    [unknown]
 PagerTool                          102001    [unknown]
 Discover                           102002    [unknown]
 unassigned                         102003 - 105000
 ShowMe                             105001    sharedapp
 Registry                           105002    REGISTRY_PROG
 Print-server                       105003    print-server
 Proto-server                       105004    proto-server

Thurlow Standards Track [Page 32] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 Notification-server                105005    notification-server
 Transfer-agent-server              105006    transfer-agent-server
 unassigned                         105007 - 110000
                                    110001    tsolrpcb
                                    110002    tsolpeerinfo
                                    110003    tsolboot
                                    120001    cmip na.cmip
                                    120002    na.osidiscover
                                    120003    cmiptrap
 unassigned                         120004 - 120099
                                    120100    eserver
                                    120101    repserver
                                    120102    swserver
                                    120103    dmd
                                    120104    ca
 unassigned                         120105 - 120125
                                    120126    nf_fddi
                                    120127    nf_fddismt7_2
 unassigned                         120128 - 150000
 pc passwd authorization            150001    pcnfsdprog
 TOPS name mapping                  150002    [unknown]
 TOPS external attribute storage    150003    [unknown]
 TOPS hierarchical file system      150004    [unknown]
 TOPS NFS transparency extensions   150005    [unknown]
 PC NFS License                     150006    pcnfslicense
 RDA                                150007    rdaprog
 WabiServer                         150008    wsprog
 WabiServer                         150009    wsrlprog
 unassigned                         150010 - 160000
                                    160001    nihon-cm
                                    160002    nihon-ce
 unassigned                         160003 - 170099
                                    170100    domf_daemon0
                                    170101    domf_daemon1
                                    170102    domf_daemon2
                                    170103    domf_daemon3
                                    170104    domf_daemon4
                                    170105    domf_daemon5
 unassigned                         170106 - 179999
                                    180000    cecprog
                                    180001    cecsysprog
                                    180002    cec2cecprog
                                    180003    cesprog
                                    180004    ces2cesprog
                                    180005    cet2cetprog
                                    180006    cet2cetdoneprog
                                    180007    cetcomprog
                                    180008    cetsysprog

Thurlow Standards Track [Page 33] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    180009    cghapresenceprog
                                    180010    cgdmsyncprog
                                    180011    cgdmcnscliprog
                                    180012    cgdmcrcscliprog
                                    180013    cgdmcrcssvcproG
                                    180014    chmprog
                                    180015    chmsysprog
                                    180016    crcsapiprog
                                    180017    ckptmprog
                                    180018    crimcomponentprog
                                    180019    crimqueryprog
                                    180020    crimsecondaryprog
                                    180021    crimservicesprog
                                    180022    crimsyscomponentprog
                                    180023    crimsysservicesprog
                                    180024    csmagtapiprog
                                    180025    csmagtcallbackprog
                                    180026    csmreplicaprog
                                    180027    csmsrvprog
                                    180028    cssccltprog
                                    180029    csscsvrprog
                                    180030    csscopresultprog
 unassigned                         180031 - 199999
                                    200000    pyramid_nfs
                                    200001    pyramid_reserved
                                    200002    cadds_image
                                    200003    stellar_name_prog
                                    200004    [unknown]
                                    200005    [unknown]
                                    200006    pacl
                                    200007    lookupids
                                    200008    ax_statd_prog
                                    200009    ax_statd2_prog
                                    200010    edm
                                    200011    dtedirwd
                                    200012    [unknown]
                                    200013    [unknown]
                                    200014    [unknown]
                                    200015    [unknown]
                                    200016    easerpcd
                                    200017    rlxnfs
                                    200018    sascuiddprog
                                    200019    knfsd
                                    200020    ftnfsd ftnfsd_program
                                    200021    ftsyncd ftsyncd_program
                                    200022    ftstatd ftstatd_program
                                    200023    exportmap
                                    200024    nfs_metadata

Thurlow Standards Track [Page 34] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 unassigned                         200025 - 200200
                                    200201    ecoad
                                    200202    eamon
                                    200203    ecolic
                                    200204    cs_printstatus_svr
                                    200205    ecodisc
 unassigned                         200206 - 300000
                                    300001    adt_rflockprog
                                    300002    columbine1
                                    300003    system33_prog
                                    300004    frame_prog1
                                    300005    uimxprog
                                    300006    rvd
                                    300007    entombing daemon
                                    300008    account mgmt system
                                    300009    frame_prog2
                                    300010    beeper access
                                    300011    dptuprog
                                    300012    mx-bcp
                                    300013    instrument-file-access
                                    300014    file-system-statistics
                                    300015    unify-database-server
                                    300016    tmd_msg
                                    300017    [unknown]
                                    300018    [unknown]
                                    300019    automounter access
                                    300020    lock server
                                    300021    [unknown]
                                    300022    office-automation-1
                                    300023    office-automation-2
                                    300024    office-automation-3
                                    300025    office-automation-4
                                    300026    office-automation-5
                                    300027    office-automation-6
                                    300028    office-automation-7
                                    300029    local-data-manager
                                    300030    chide
                                    300031    csi_program
                                    300032    [unknown]
                                    300033    online-help
                                    300034    case-tool
                                    300035    delta
                                    300036    rgi
                                    300037    instrument-config-server
                                    300038    [unknown]
                                    300039    [unknown]
                                    300040    dtia-rpc-server
                                    300041    cms

Thurlow Standards Track [Page 35] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300042    viewer
                                    300043    aqm
                                    300044    exclaim
                                    300045    masterplan
                                    300046    fig_tool
                                    300047    [unknown]
                                    300048    [unknown]
                                    300049    [unknown]
                                    300050    remote-lock-manager
                                    300051    [unknown]
                                    300052    gdebug
                                    300053    ldebug
                                    300054    rscanner
                                    300055    [unknown]
                                    300056    [unknown]
                                    300057    [unknown]
                                    300058    [unknown]
                                    300059    [unknown]
                                    300060    [unknown]
                                    300061    [unknown]
                                    300062    [unknown]
                                    300063    [unknown]
                                    300064    [unknown]
                                    300065    [unknown]
                                    300066    nSERVER
                                    300067    [unknown]
                                    300068    [unknown]
                                    300069    [unknown]
                                    300070    [unknown]
                                    300071    BioStation
                                    300072    [unknown]
                                    300073    NetProb
                                    300074    Logging
                                    300075    Logging
                                    300076    [unknown]
                                    300077    [unknown]
                                    300078    [unknown]
                                    300079    [unknown]
                                    300080    [unknown]
                                    300081    [unknown]
                                    300082    sw_twin
                                    300083    remote_get_login
                                    300084    odcprog
                                    300085    [unknown]
                                    300086    [unknown]
                                    300087    [unknown]
                                    300088    [unknown]
                                    300089    [unknown]

Thurlow Standards Track [Page 36] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300090    [unknown]
                                    300091    smartdoc
                                    300092    superping
                                    300093    distributed-chembench
                                    300094    uacman/alfil-uacman
                                    300095    ait_rcagent_prog
                                    300096    ait_rcagent_appl_prog
                                    300097    smart
                                    300098    ecoprog
                                    300099    leonardo
                                    300100    [unknown]
                                    300101    [unknown]
                                    300102    [unknown]
                                    300103    [unknown]
                                    300104    [unknown]
                                    300105    [unknown]
                                    300106    [unknown]
                                    300107    [unknown]
                                    300108    wingz
                                    300109    teidan
                                    300110    [unknown]
                                    300111    [unknown]
                                    300112    [unknown]
                                    300113    [unknown]
                                    300114    [unknown]
                                    300115    [unknown]
                                    300116    cadc_fhlockprog
                                    300117    highscan
                                    300118    [unknown]
                                    300119    [unknown]
                                    300120    [unknown]
                                    300121    opennavigator
                                    300122    aarpcxfer
                                    300123    [unknown]
                                    300124    [unknown]
                                    300125    [unknown]
                                    300126    groggs
                                    300127    licsrv
                                    300128    issdemon
                                    300129    [unknown]
                                    300130    maximize
                                    300131    cgm_server
                                    300132    [unknown]
                                    300133    agent_rpc
                                    300134    docmaker
                                    300135    docmaker
                                    300136    [unknown]
                                    300137    [unknown]

Thurlow Standards Track [Page 37] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300138    [unknown]
                                    300139    iesx
                                    300140    [unknown]
                                    300141    [unknown]
                                    300142    [unknown]
                                    300143    [unknown]
                                    300144    smart-mbs
                                    300145    [unknown]
                                    300146    [unknown]
                                    300147    docimage
                                    300148    [unknown]
                                    300149    dmc-interface
                                    300150    [unknown]
                                    300151    jss
                                    300152    [unknown]
                                    300153    arimage
                                    300154    xdb-workbench
                                    300155    frontdesk
                                    300156    dmc
                                    300157    expressight-6000
                                    300158    graph service program
                                    300159    [unknown]
                                    300160    [unknown]
                                    300161    [unknown]
                                    300162    [unknown]
                                    300163    [unknown]
                                    300164    [unknown]
                                    300165    [unknown]
                                    300166    [unknown]
                                    300167    [unknown]
                                    300168    [unknown]
                                    300169    [unknown]
                                    300170    [unknown]
                                    300171    [unknown]
                                    300172    [unknown]
                                    300173    [unknown]
                                    300174    [unknown]
                                    300175    [unknown]
                                    300176    rlpr
                                    300177    nx_hostdprog
                                    300178    netuser-x
                                    300179    rmntprog
                                    300180    [unknown]
                                    300181    mipe
                                    300182    [unknown]
                                    300183    collectorprog
                                    300184    uslookup_PROG
                                    300185    viewstation

Thurlow Standards Track [Page 38] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300186    iate
                                    300187    [unknown]
                                    300188    [unknown]
                                    300189    [unknown]
                                    300190    imsvtprog
                                    300191    [unknown]
                                    300192    [unknown]
                                    300193    [unknown]
                                    300194    pmdb
                                    300195    pmda
                                    300196    [unknown]
                                    300197    [unknown]
                                    300198    trend_idbd
                                    300199    rres
                                    300200    sd.masterd
                                    300201    sd.executiond
                                    300202    sd.listend
                                    300203    sd.reserve1
                                    300204    sd.reserve2
                                    300205    msbd
                                    300206    stagedprog
                                    300207    mountprog
                                    300208    watchdprog
                                    300209    pms
                                    300210    [unknown]
                                    300211    session_server_program
                                    300212    session_program
                                    300213    debug_serverprog
                                    300214    [unknown]
                                    300215    [unknown]
                                    300216    paceprog
                                    300217    [unknown]
                                    300218    mbus
                                    300219    aframes2ps
                                    300220    npartprog
                                    300221    cm1server
                                    300222    cm1bridge
                                    300223    sailfrogfaxprog
                                    300224    sailfrogphoneprog
                                    300225    sailfrogvmailprog
                                    300226    wserviceprog arcstorm
                                    300227    hld
                                    300228    alive
                                    300229    radsp
                                    300230    radavx
                                    300231    radview
                                    300232    rsys_prog
                                    300233    rsys_prog

Thurlow Standards Track [Page 39] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300234    fm_rpc_prog
                                    300235    aries
                                    300236    uapman
                                    300237    ddman
                                    300238    top
                                    300239    [unknown]
                                    300240    trendlink
                                    300241    licenseprog
                                    300242    statuslicenseprog
                                    300243    oema_rmpf_svc
                                    300244    oema_smpf_svc
                                    300245    oema_rmsg_svc
                                    300246    grapes-sd
                                    300247    ds_master
                                    300248    ds_transfer
                                    300249    ds_logger
                                    300250    ds_query
                                    300251    [unknown]
                                    300252    [unknown]
                                    300253    nsd_prog
                                    300254    browser
                                    300255    epoch
                                    300256    floorplanner
                                    300257    reach
                                    300258    tactic
                                    300259    cachescientific1
                                    300260    cachescientific2
                                    300261    desksrc_prog
                                    300262    photo3d1
                                    300263    photo3d2
                                    300264    [unknown]
                                    300265    soundmgr
                                    300266    s6k
                                    300267    aims_referenced_
                                              text_processor
                                    300268    xess
                                    300269    ds_queue
                                    300270    [unknown]
                                    300271    orionscanplus
                                    300272    openlink-xx
                                    300273    kbmsprog
                                    300274    [unknown]
                                    300275    futuresource
                                    300276    the_xprt
                                    300277    cmg_srvprog
                                    300278    [unknown]
                                    300279    [unknown]
                                    300280    front

Thurlow Standards Track [Page 40] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300281    [unknown]
                                    300282    [unknown]
                                    300283    [unknown]
                                    300284    conmanprog
                                    300285    jincv2
                                    300286    isls
                                    300287    systemstatprog
                                    300288    fxpsprog
                                    300289    callpath
                                    300290    axess
                                    300291    armor_rpcd
                                    300292    armor_dictionary_rpcd
                                    300293    armor_miscd
                                    300294    filetransfer_prog
                                    300295    bl_swda
                                    300296    bl_hwda
                                    300297    [unknown]
                                    300298    [unknown]
                                    300299    [unknown]
                                    300300    filemon
                                    300301    acunetprog
                                    300302    rbuild
                                    300303    assistprog
                                    300304    tog
                                    300305    [unknown]
                                    300306    sns7000
                                    300307    igprog
                                    300308    tgprog
                                    300309    plc
                                    300310    pxman pxlsprog
                                    300311    hde_server hdeserver
                                    300312    tsslicenseprog
                                    300313    rpc.explorerd
                                    300314    chrd
                                    300315    tbisam
                                    300316    tbis
                                    300317    adsprog
                                    300318    sponsorprog
                                    300319    querycmprog
                                    300320    [unknown]
                                    300321    [unknown]
                                    300322    mobil1
                                    300323    sld
                                              service_locator_daemon
                                    300324    linkprog
                                    300325    codexdaemonprog
                                    300326    drprog
                                    300327    ressys_commands

Thurlow Standards Track [Page 41] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300328    stamp
                                    300329    matlab
                                    300330    sched1d
                                    300331    upcprog
                                    300332    xferbkch
                                    300333    xfer
                                    300334    qbthd
                                    300335    qbabort
                                    300336    lsd
                                    300337    geomgrd
                                    300338    generic_fts
                                    300339    ft_ack
                                    300340    lymb
                                    300341    vantage
                                    300342    cltstd clooptstdprog
                                    300343    clui clui_prog
                                    300344    testerd tstdprog
                                    300345    extsim
                                    300346    cmd_dispatch maxm_ems
                                    300347    callpath_receive_program
                                    300348    x3270prog
                                    300349    sbc_lag
                                    300350    sbc_frsa
                                    300351    sbc_frs
                                    300352    atommgr
                                    300353    geostrat
                                    300354    dbvialu6.2
                                    300355    [unknown]
                                    300356    fxncprog
                                    300357    infopolic
                                    300358    [unknown]
                                    300359    aagns
                                    300360    aagms
                                    300361    [unknown]
                                    300362    clariion_mgr
                                    300363    setcimrpc
                                    300364    virtual_protocol_adapter
                                    300365    unibart
                                    300366    uniarch
                                    300367    unifile
                                    300368    unisrex
                                    300369    uniscmd
                                    300370    rsc
                                    300371    set
                                    300372    desaf-ws/key
                                    300373    reeldb
                                    300374    nl
                                    300375    rmd

Thurlow Standards Track [Page 42] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300376    agcd
                                    300377    rsynd
                                    300378    rcnlib
                                    300379    rcnlib_attach
                                    300380    evergreen_mgmt_agent
                                    300381    fx104prog
                                    300382    rui
                                              remote_user_interface
                                    300383    ovomd
                                    300384    [unknown]
                                    300385    [unknown]
                                    300386    system_server
                                    300387    pipecs cs_pipeprog
                                              ppktrpc
                                    300388    uv-net univision
                                    300389    auexe
                                    300390    audip
                                    300391    mqi
                                    300392    eva
                                    300393    eeei_reserved_1
                                    300394    eeei_reserved_2
                                    300395    eeei_reserved_3
                                    300396    eeei_reserved_4
                                    300397    eeei_reserved_5
                                    300398    eeei_reserved_6
                                    300399    eeei_reserved_7
                                    300400    eeei_reserved_8
                                    300401    cprlm
                                    300402    wg_idms_manager
                                    300403    timequota
                                    300404    spiff
                                    300405-300414        ov_oem_svc
                                    300415    ov_msg_ctlg_svc
                                    300416    ov_advt_reg_svc
                                    300417-300424  showkron
                                    300425    daatd
                                    300426    swiftnet
                                    300427    ovomdel
                                    300428    ovomreq
                                    300429    msg_dispatcher
                                    300430    pcshare server
                                    300431    rcvs
                                    300432    fdfserver
                                    300433    bssd
                                    300434    drdd
                                    300435    mif_gutsprog
                                    300436    mif_guiprog
                                    300437    twolfd

Thurlow Standards Track [Page 43] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300438    twscd
                                    300439    nwsbumv
                                    300440    dgux_mgr
                                    300441    pfxd
                                    300442    tds
                                    300443    ovomadmind
                                    300444    ovomgate
                                    300445    omadmind
                                    300446    nps
                                    300447    npd
                                    300448    tsa
                                    300449    cdaimc
 unassigned                         300450-300452
                                    300453    ckt_implementation
                                    300454    mda-tactical
 unassigned                         300455-300458
                                    300459    atrrun
                                    300460    RoadRunner
                                    300461    nas
                                    300462    undelete
                                    300463    ovacadd
                                    300464    tbdesmai
                                    300465    arguslm
                                    300466    dmd
                                    300467    drd
                                    300468    fm_help
                                    300469    ftransrpc_prog
                                    300470    finrisk
                                    300471    dg_pc_idisched
                                    300472    dg_pc_idiserv
                                    300473    apd
                                    300474    ap_sspd
                                    300475    callpatheventrecorder
                                    300476    flc
                                    300477    dg_osm
                                    300478    dspnamed
                                    300479    iqddsrv
                                    300480    iqjobsrv
                                    300481    tacosxx
                                    300482    wheeldbmg
                                    300483    cnxmgr_nm_prog
                                    300484    cnxmgr_cfg_prog
                                    300485    3dsmapper
                                    300486    ids
                                    300487    imagine_rpc_svc
                                    300488    lfn
                                    300489    salesnet
                                    300490    defaxo

Thurlow Standards Track [Page 44] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300491    dbqtsd
                                    300492    kms
                                    300493    rpc.iced
                                    300494    calc2s
                                    300495    ptouidprog
                                    300496    docsls
                                    300497    new
                                    300498    collagebdg
                                    300499    ars_server
                                    300500    ars_client
                                    300501    vr_catalog
                                    300502    vr_tdb
                                    300503    ama
                                    300504    evama
                                    300505    conama
                                    300506    service_process
                                    300507    reuse_proxy
                                    300508    mars_ctrl
                                    300509    mars_db
                                    300510    mars_com
                                    300511    mars_admch
                                    300512    tbpipcip
                                    300513    top_acs_svc
                                    300514    inout_svc
                                    300515    csoft_wp
                                    300516    mcfs
                                    300517    eventprog
                                    300518    dg_pc_idimsg
                                    300519    dg_pc_idiaux
                                    300520    atsr_gc
                                    300521    alarm alarm_prog
                                    300522    fts_prog
                                    300523    dcs_prog
                                    300524    ihb_prog
                                    300525    [unknown]
                                    300526    [unknown]
                                    300527    clu_info_prog
                                    300528    rmfm
                                    300529    c2sdocd
                                    300530    interahelp
                                    300531    callpathasyncmsghandler
                                    300532    optix_arc
                                    300533    optix_ts
                                    300534    optix_wf
                                    300535    maxopenc
                                    300536    cev cev_server
                                    300537    sitewideprog
                                    300538    drs

Thurlow Standards Track [Page 45] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300539    drsdm
                                    300540    dasgate
                                    300541    dcdbd
                                    300542    dcpsd
                                    300543    supportlink_prog
                                    300544    broker
                                    300545    listner
                                    300546    multiaccess
                                    300547    spai_interface
                                    300548    spai_adaption
                                    300549    chimera_ci
                                              chimera_clientinterface
                                    300550    chimera_pi
                                              chimera_processinvoker
                                    300551    teamware_fl
                                              teamware_foundationlevel
                                    300552    teamware_sl
                                              teamware_systemlevel
                                    300553    teamware_ui
                                              teamware_userinterface
                                    300554    lprm
                                    300555    mpsprog
                                              Mensuration_Proxy_Server
                                    300556    mo_symdis
                                    300557    retsideprog
                                    300558    slp
                                    300559    slm-api
                                    300560    im_rpc teamconference
                                    300561    license_prog license
                                    300562    stuple stuple_prog
                                    300563    upasswd_prog
                                    300564    gentranmentorsecurity
                                    300565    gentranmentorprovider
                                    300566    latituded
                                              latitude_license_server
                                    300567    gentranmentorreq1
                                    300568    gentranmentorreq2
                                    300569    gentranmentorreq3
                                    300570    rj_server
                                    300571    gws-rdb
                                    300572    gws-mpmd
                                    300573    gws-spmd
                                    300574    vwcalcd
                                    300575    vworad
                                    300576    vwsybd
                                    300577    vwave
                                    300578    online_assistant
                                    300579    internet_assistant

Thurlow Standards Track [Page 46] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300580    spawnd
                                    300581    procmgrg
                                    300582    cfgdbd
                                    300583    logutild
                                    300584    ibis
                                    300585    ibisaux
                                    300586    aapi
                                    300587    rstrt
                                    300588    hbeat
                                    300589    pcspu
                                    300590    empress
                                    300591    sched_server
                                              LiveScheduler
                                    300592    path_server
                                              LiveScheduler
                                    300593    c2sdmd
                                    300594    c2scf
                                    300595    btsas
                                    300596    sdtas
                                    300597    appie
                                    300598    dmi
                                    300599    pscd
                                          panther software corp daemon
                                    300600    sisd
                                    300601    cpwebserver
                                    300602    wwcommo
                                    300603    mx-mie
                                    300604    mx-mie-debug
                                    300605    idmn
                                    300606    ssrv
                                    300607    vpnserver
                                    300608    samserver
                                    300609    sams_server
                                    300610    chrysalis
                                    300611    ddm
                                    300612    ddm-is
                                    300613    mx-bcp-debug
                                    300614    upmrd
                                    300615    upmdsd
                                    300616    res
                                    300617    colortron
                                    300618    zrs
                                    300619    afpsrv
                                    300620    apxft
                                    300621    nrp
                                    300622    hpid
                                    300623    mailwatch
                                    300624    fos bc_fcrb_receiver

Thurlow Standards Track [Page 47] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300625    cs_sysadmin_svr
                                    300626    cs_controller_svr
                                    300627    nokia_nms_eai
                                    300628    dbg
                                    300629    remex
                                    300630    cs_bind
                                    300631    idm
                                    300632    prpasswd
                                    300633    iw-pw
                                    300634    starrb
                                    300635    Impress_Server
                                    300636    colorstar
                                    300637    gwugui
                                    300638    gwsgui
                                    300639    dai_command_proxy
                                    300640    dai_alarm_server
                                    300641    dai_fui_proxy
                                    300642    spai_command_proxy
                                    300643    spai_alarm_server
                                    300644    iris
                                    300645    hcxttp
                                    300646    updatedb rsched
                                    300647    urnd urn
                                    300648    iqwpsrv
                                    300649    dskutild
                                    300650    online
                                    300651    nlserv
                                    300652    acsm
                                    300653    dg_clar_sormsg
                                    300654    wwpollerrpc
                                    300655    wwmodelrpc
                                    300656    nsprofd
                                    300657    nsdistd
                                    300658    recollect
                                    300659    lssexecd lss_res
                                    300660    lssagend lss_rea
                                    300661    cdinfo
                                    300662    sninsr_addon
                                    300663    mm-sap
                                    300664    ks
                                    300665    psched
                                    300666    tekdvfs
                                    300667    storxll
                                    300668    nisse
                                    300669    lbadvise
                                    300670    atcinstaller
                                    300671    atntstarter
                                    300672    NetML

Thurlow Standards Track [Page 48] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300673    tdmesmge
                                    300674    tdmesmgd
                                    300675    tdmesmgt
                                    300676    olm
                                    300677    mediamanagement
                                    300678    rdbprog fieldowsrv
                                    300679    rpwdprog rpwd
                                    300680    sapi-trace
                                    300681    sapi-master-daemon
                                    300682    omdcuprog om-dcu
                                    300683    wwprocmon
                                    300684    tndidprog
                                    300685    rkey_setsecretprog
                                    300686    asdu_server_prog
                                    300687    pwrcntrl
                                    300688    siunixd
                                    300689    wmapi
                                    300690    cross_reference_ole
                                    300691    rtc
                                    300692    disp
                                    300693    sql_compilation_agent
                                    300694    tnsysprog
                                    300695    ius-sapimd
                                    300696    apteam-dx
                                    300697    rmsrpc
                                    300698    seismic_system
                                    300699    remote
                                    300700    tt1_ts_event nokia_nms
                                    300701    fxrs
                                    300702    onlicense
                                    300703    vxkey
                                    300704    dinis
                                    300705    sched2d schedule-2
                                    300706    sched3d schedule-3
                                    300707    sched4d schedule-4
                                    300708    sched5d schedule-5
                                    300709    sched6d schedule-6
                                    300710    sched7d schedule-7
                                    300711    sched8d schedule-8
                                    300712    sched9d schedule-9
                                    300713    adtsqry
                                    300714    adserv
                                    300715    adrepserv
                                    300716    [unknown]
                                    300717    caad
                                    300718    caaui
                                    300719    cescda
                                    300720    vcapiadmin

Thurlow Standards Track [Page 49] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300721    vcapi20
                                    300722    tcfs
                                    300723    csed
                                    300724    nothand
                                    300725    hacb
                                    300726    nfauth
                                    300727    imlm
                                    300728    bestcomm
                                    300729    lprpasswd
                                    300730    rprpasswd
                                    300731    proplistd
                                    300732    mikomomc
                                    300733    arepa-cas
                                    300734    [unknown]
                                    300735    [unknown]
                                    300736    ando_ts
                                    300737    intermezzo
                                    300738    ftel-sdh-request
                                    300739    ftel-sdh-response
                                    300740    [unknown]
                                    300741    [unknown]
                                    300742    [unknown]
                                    300743    [unknown]
                                    300744    [unknown]
                                    300745    vrc_abb
                                    300746    vrc_comau
                                    300747    vrc_fanuc
                                    300748    vrc_kuka
                                    300749    vrc_reis
                                    300750    hp_sv6d
                                    300751    correntmgr01
                                    300752    correntike
                                    300753    [unknown]
                                    300754    [unknown]
                                    300755    intransa_location
                                    300756    intransa_management
                                    300757    intransa_federation
                                    300758    portprot
                                    300759    ipmiprot
                                    300760    aceapi
                                    300761    f6000pss
                                    300762    vsmapi_program
                                    300763    ubertuple
                                    300764    ctconcrpcif
                                    300765    mfuadmin
                                    300766    aiols
                                    300767    dsmrootd
                                    300768    htdl

Thurlow Standards Track [Page 50] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    300769    caba
                                    300770    vrc_cosimir
                                    300771    cmhelmd
                                    300772    polynsm
                                    300773    [unknown]
                                    300774    [unknown]
                                    300775    [unknown]
                                    300776    [unknown]
                                    300777    [unknown]
                                    300778    [unknown]
                                    300779    [unknown]
                                    300780    [unknown]
                                    300781    dsmrecalld
                                    300782    [unknown]
                                    300783    [unknown]
                                    300784    twrgcontrol
                                    300785    twrled
                                    300786    twrcfgdb
 BMC software                       300787-300886
 unassigned                         300887 - 300999
 Sun Microsystems                   301000-302000 [ 2000 numbers ]
 unassigned                         302001-349999
 American Airlines                  350000 - 350999
 Acucobol Inc.                      351000 - 351099
 The Bristol Group                  351100 - 351249
 Amteva Technologies                351250 - 351349
                                    351350    wfmMgmtApp
                                    351351    wfmMgmtDataSrv
                                    351352    wfmMgmtFut1
                                    351353    wfmMgmtFut1
                                    351354    wfmAPM
                                    351355    wfmIAMgr
                                    351356    wfmECMgr
                                    351357    wfmLookOut
                                    351358    wfmAgentFut1
                                    351359    wfmAgentFut2
 unassigned                         351360 - 351406
 Sterling Software ITD              351407    csed
                                    351360    sched10d
                                    351361    sched11d
                                    351362    sched12d
                                    351363    sched13d
                                    351364    sched14d
                                    351365    sched15d
                                    351366    sched16d
                                    351367    sched17d
                                    351368    sched18d
                                    351369    sched19d

Thurlow Standards Track [Page 51] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    351370    sched20d
                                    351371    sched21d
                                    351372    sched22d
                                    351373    sched23d
                                    351374    sched24d
                                    351375    sched25d
                                    351376    sched26d
                                    351377    sched27d
                                    351378    sched28d
                                    351379    sched29d
                                    351380    sched30d
                                    351381    sched31d
                                    351382    sched32d
                                    351383    sched33d
                                    351384    sched34d
                                    351385    sched35d
                                    351386    sched36d
                                    351387    sched37d
                                    351388    sched38d
                                    351389    sched39d
                                    351390    consoleserver
                                    351391    scheduleserver
                                    351392    RDELIVER
                                    351393    REVENTPROG
                                    351394    RSENDEVENTPROG
                                    351395    snapp
                                    351396    snapad
                                    351397    sdsoodb
                                    351398    sdsmain
                                    351399    sdssrv
                                    351400    sdsclnt
                                    351401    sdsreg
                                    351402    fsbatch
                                    351403    fsmonitor
                                    351404    fsdisp
                                    351405    fssession
                                    351406    fslog
                                    351407    svdpappserv
                                    351408    gns
                                    351409    [unkonwn]
                                    351410    [unkonwn]
                                    351411    [unkonwn]
                                    351412    axi
                                    351413    rpcxfr
                                    351414    slm
                                    351415    smbpasswdd
                                    351416    tbdbserv
                                    351417    tbprojserv

Thurlow Standards Track [Page 52] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    351418    genericserver
                                    351419    dynarc_ds
                                    351420    dnscmdr
                                    351421    ipcmdr
                                    351422    faild
                                    351423    failmon
                                    351424    faildebug
                                    351425    [unknown]
                                    351426    [unknown]
                                    351427    siemens_srs
                                    351428    bsproxy
                                    351429    ifsrpc
                                    351430    CesPvcSm
                                    351431    FrPvcSm
                                    351432    AtmPvcSm
                                    351433    radius
                                    351434    auditor
                                    351435    sft
                                    351436    voicemail
                                    351437    kis
                                    351438    SOFTSERV_NOTIFY
                                    351439    dynarpc
                                    351440    hc
                                    351441    iopas
                                    351442    iopcs
                                    351443    iopss
                                    351444    spcnfs
                                    351445    spcvss
                                    351446    matilda_sms
                                    351447    matilda_brs
                                    351448    matilda_dbs
                                    351449    matilda_sps
                                    351450    matilda_svs
                                    351451    matilda_sds
                                    351452    matilda_vvs
                                    351453    matilda_stats
                                    351454    xtrade
                                    351455    mapsvr
                                    351456    hp_graphicsd
                                    351457    berkeley_db
                                              berkeley_db_svc
                                    351458    io_server
                                    351459    rpc.niod
                                    351460    rpc.kill
                                    351461    hmdisproxy
                                    351462    smdisproxy
                                    351463    avatard
                                    351464    namu

Thurlow Standards Track [Page 53] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    351465    BMCSess
                                    351466    FENS_Sport
                                    351467    EM_CONFIG
                                    351468    EM_CONFIG_RESP
                                    351469    lodge_proof
                                    351470    ARCserveIT-Queue
                                    351471    ARCserveIT-Device
                                    351472    ARCserveIT-Discover
                                    351473    ARCserveIT-Alert
                                    351474    ARCserveIT-Database
                                    351475    scand1
                                    351476    scand2
                                    351477    scand3
                                    351478    scand4
                                    351479    scand5
                                    351480    dscv
                                    351481    cb_svc
                                    351482    [unknown]
                                    351483    iprobe
                                    351484    omniconf
                                    351485    isan
 BG Partners                        351486 - 351500
                                    351501    mond
                                    351502    iqlremote
                                    351503    iqlalarm
 unassigned                         351504 - 351599
 Orion Multisystems                 351600-351855
 unassigned                         351856 - 351899
 NSP lab                            351900 - 351999
 unassigned                         351999 - 352232
                                    352233    asautostart
                                    352234    asmediad1
                                    352235    asmediad2
                                    352236    asmediad3
                                    352237    asmediad4
                                    352238    asmediad5
                                    352239    asmediad6
                                    352240    asmediad7
                                    352241    asmediad8
                                    352242    asmediad9
                                    352243    asmediad10
                                    352244    asmediad11
                                    352245    asmediad12
                                    352246    asmediad13
                                    352247    asmediad14
                                    352248    asmediad15
                                    352249    asmediad16
                                    352250    waruser

Thurlow Standards Track [Page 54] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    352251    warlogd
                                    352252    warsvrmgr
                                    352253    warvfsysd
                                    352254    warftpd
                                    352255    warnfsd
                                    352256    bofproxyc0
                                    352257    bofproxys0
                                    352258    bofproxyc1
                                    352259    bofproxys1
                                    352260    bofproxyc2
                                    352261    bofproxys2
                                    352262    bofproxyc3
                                    352263    bofproxys3
                                    352264    bofproxyc4
                                    352265    bofproxys4
                                    352266    bofproxyc5
                                    352267    bofproxys5
                                    352268    bofproxyc6
                                    352269    bofproxys6
                                    352270    bofproxyc7
                                    352271    bofproxys7
                                    352272    bofproxyc8
                                    352273    bofproxys8
                                    352274    bofproxyc9
                                    352275    bofproxys9
                                    352276    bofproxyca
                                    352277    bofproxysa
                                    352278    bofproxycb
                                    352279    bofproxysb
                                    352280    bofproxycc
                                    352281    bofproxysc
                                    352282    bofproxycd
                                    352283    bofproxysd
                                    352284    bofproxyce
                                    352285    bofproxyse
                                    352286    bofproxycf
                                    352287    bofproxysf
                                    352288    bofproxypo0
                                    352289    bofproxypo1
                                    352290    bofproxypo2
                                    352291    bofproxypo3
                                    352292    bofproxypo4
 unassigned                         352293-370000
                                    370001    [unknown]
                                    370002    [unknown]
                                    370003    [unknown]
                                    370004    [unknown]
                                    370005    [unknown]

Thurlow Standards Track [Page 55] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    370006    [unknown]
                                    370007    [unknown]
                                    370008    [unknown]
                                    370009    [unknown]
                                    370010    [unknown]
                                    370011    [unknown]
                                    370012    [unknown]
                                    370013    [unknown]
                                    370014    [unknown]
                                    370015    [unknown]
                                    370016    [unknown]
                                    370017    [unknown]
                                    370018    [unknown]
                                    370019    [unknown]
                                    370020    [unknown]
                                    370021    [unknown]
                                    370022    [unknown]
                                    370023    [unknown]
                                    370024    [unknown]
                                    370025    [unknown]
                                    370026    [unknown]
                                    370027    [unknown]
 unassigned                         370028 - 379999
                                    380000    opensna
                                    380001    probenet
                                    380002    [unknown]
                                    380003    license
                                    380004    na.3com-remote
                                    380005    na.ntp
                                    380006    probeutil
                                    380007    na.vlb
                                    380008    cds_mhs_agent
                                    380009    cds_x500_agent
                                    380010    cds_mailhub_agent
                                    380011    codex_6500_proxy
                                    380012    codex_6500_trapd
                                    380013    na.nm212
                                    380014    cds_mta_metrics_agent
                                    380015    [unkonwn]
                                    380016    na.caple
                                    380017    codexcapletrap
 Swiss Re                           380018-380028
                                    380029    ncstat
                                    380030    ncnfsstat
                                    380031    ftams
                                    380032    na.isotp
                                    380033    na.rfc1006
 unassigned                         380034 - 389999

Thurlow Standards Track [Page 56] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 Epoch Systems                      390000 - 390049
 Quickturn Systems                  390050 - 390065
 Team One Systems                   390066 - 390075
 General Electric CRD               390076 - 390085
 TSIG NFS subcommittee              390086 - 390089
 SoftLab ab                         390090 - 390099
 Legato Network Services            390100 - 390115
                                    390116    cdsmonitor
                                    390117    cdslock
                                    390118    cdslicense
                                    390119    shm
                                    390120    rws
                                    390121    cdc
 Data General                       390122 - 390141
 Perfect Byte                       390142 - 390171
 JTS Computer Systems               390172 - 390181
 Parametric Technology              390182 - 390191
 Voxem                              390192 - 390199
 Effix Systems                      390200 - 390299
 Motorola                           390300 - 390309
 Mobile Data Intl.                  390310 - 390325
 Physikalisches Institut            390326 - 390330
 Ergon Informatik AG                390331 - 390340
 Analog Devices Inc.                390341 - 390348
 Interphase Corporation             390349 - 390358
 NeWsware                           390359 - 390374
 Qualix Group                       390375 - 390379
 Xerox Imaging Systems              390380 - 390389
 Noble Net                          390390 - 390399
 Legato Network Services            390400 - 390499
 Client Server Tech.                390500 - 390511
 Atria                              390512 - 390517
 GE NMR Instruments                 390518 - 390525
 Harris Corp.                       390526 - 390530
 Unisys                             390531 - 390562
 Aggregate Computing                390563 - 390572
 Interactive Data                   390573 - 390580
 OKG AB                             390581 - 390589
 K2 Software                        390591 - 390594
 Collier Jackson                    390595 - 390599
 Remedy Corporation                 390600 - 390699
 Mentor Graphics                    390700 - 390799
 AT&T Bell Labs (Lucent)            390800 - 390899
 Xerox                              390900 - 390999
 Silicon Graphics                   391000 - 391063
 Data General                       391064 - 391095
 Computer Support Corp.             391096 - 391099
 Quorum Software Systems            391100 - 391199

Thurlow Standards Track [Page 57] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 InterLinear Technology             391200 - 391209
 Highland Software                  391210 - 391229
 Boeing Comp. Svcs.                 391230 - 391249
 IBM Sweden                         391250 - 391259
 Signature Authority Svc            391260 - 391271
 ZUMTOBEL Licht GmbH                391272 - 391283
 NOAA/ERL                           391284 - 391299
 NCR Corp.                          391300 - 391399
 FTP Software                       391400 - 391409
 Cadre Technologies                 391410 - 391433
 Visionware Ltd (UK)                391434 - 391439
 IBR-Partner AG                     391440 - 391449
 CAP Programator AB                 391450 - 391459
 Reichle+De-Massari AG              391460 - 391474
 Swiss Bank Corp (London)           391475 - 391484
 Unisys Enterprise Svr              391485 - 391489
 Intel - Test Dev. Tech.            391490 - 391499
 Ampex                              391500 - 391755
                                    391756    naas-spare
                                    391757    naas-admin
                                    391758    isps
                                    391759    isps-admin
                                    391760    mars
                                    391761    mars-admin
                                    391762    attcis_spare0
                                    391763    attcis_spare1
                                    391764    mail-server
                                    391765    mail-server-spare
                                    391766    attcis_spare2
                                    391767    attcis_spare3
                                    391768    attcis_spare4
                                    391769    attcis_spare5
                                    391770    attcis_spare6
                                    391771    attcis_spare7
 Integrated Systems, Inc.           391772 - 391779
 Parametric Tech., Inc.             391780 - 391789
 Ericsson Telecom AB                391790 - 391799
 SLAC                               391800 - 391849
                                    391850    qhrdata
                                    391851    qhrbackup
                                    391852    minutedata
                                    391853    prefecture
                                    391854    supc
                                    391855    suadmincrw
                                    391856    suadminotas
                                    391857    sumessage
                                    391858    sublock
                                    391859    sumotd

Thurlow Standards Track [Page 58] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 staffware dev. (uk)                391860 - 391869
 Staffware Dev. (UK)                391870 - 391879
                                    391880    namesrvr
                                    391881    disksrvr
                                    391882    tapesrvr
                                    391883    migsrvr
                                    391884    pdmsrvr
                                    391885    pvrsrvr
                                    391886    repacksrvr
                                    391887    [unknown]
 Convex Computer Corp.              391888 - 391951
                                    391952    lookoutsrv
                                    391953    lookoutagnt
                                    391954    lookoutprxy
                                    391955    lookoutsnmp
                                    391956    lookoutrmon
                                    391957    lookoutfut1
                                    391958    lookoutfut2
 windward                           391959 - 391967
                                    391968    sra_legato
                                    391969    sra_legato_imgsvr
                                    391970    sra_legato_0
                                    391971    sra_legato_1
                                    391972    sra_legato_2
                                    391973    sra_legato_3
                                    391974    sra_legato_4
                                    391975    sra_legato_5
                                    391976    sra_legato_6
                                    391977    sra_legato_7
                                    391978    sra_legato_8
                                    391979    sra_legato_9
 Brooktree Corp.                    391980 - 391989
 Cadence        Design Systems      391990 - 391999
 J. Frank & Associates              392000 - 392999
 Cooperative Solutions              393000 - 393999
 Xerox Corp.                        394000 - 395023
                                    395024    odbc_sqlretriever
 3M                                 395025 - 395091
 Digital Zone Intl.                 395092 - 395099
 Software Professionals             395100 - 395159
 Del Mar Solutions                  395160 - 395164
                                    395165    ife-es
                                    395166    ife-resmgr
                                    395167    ife-aes
                                    395168    ife-bite
                                    395169    ife-loader
                                    395170    ife-satcom
                                    395171    ife-seat

Thurlow Standards Track [Page 59] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

                                    395172    ife-dbmgr
                                    395173    ife-testmgr
                                    395174    atrium_server
                                    395175    ase_director
                                    395176    ase_agent
                                    395177    ase_hsm
                                    395178    ase_mgr
                                    395179    ase_sim
 Hewlett-Packard                    395180 - 395194
 XES, Inc.                          395195 - 395199
 Unitech Products                   395200 - 395249
 TransSys                           395250 - 395505
 Unisys Govt Systems                395506 - 395519
 Bellcore                           395520 - 395529
 IBM                                395530 - 395561
 AT&T Network Services              395562 - 395571
 Data General                       395572 - 395577
 Swiss Bank Corp                    395578 - 395597
 Swiss Bank Corp                    395598 - 395637
 Novell                             395638 - 395643
 Computer Associates                395644 - 395650
 Omneon Video Networks              395651 - 395656
 unassigned                         395657 - 395908
 UK Post Office                     395909 - 395924
 AEROSPATIALE                       395925 - 395944
 Result d.o.o.                      395945 - 395964
 DataTools, Inc.                    395965 - 395980
 CADIS, Inc.                        395981 - 395990
 Cummings Group, Inc.               395991 - 395994
 Cadre Technologies                 395995 - 395999
 American Airlines                  396000 - 396999
 Ericsson Telecom TM Div            397000 - 398023
 IBM                                398024 - 398028
 Toshiba OME Works                  398029 - 398033
 TUSC Computer Systems              398034 - 398289
 AT&T                               398290 - 398320
 Ontario Hydro                      398321 - 398346
 Micrion Corporation                398347 - 398364
 unassigned                         398365 - 398591
 Pegasystems, Inc.                  398592 - 399616
 Spectra Securities Soft            399617 - 399850
 QualCom                            399851 - 399866
 unassigned                         399867 - 399884
 Altris Software Ltd.               399885 - 399899
 ISO/IEC WG11                       399900 - 399919
 Parametric Technology              399920 - 399949
 Dolby Laboratories                 399950 - 399981
 unassigned                         399982 - 399991

Thurlow Standards Track [Page 60] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 Xerox PARC                         399992 - 399999
 #
 Next Inc.                          200100000 - 200199999
 Netwise (RPCtool)                  200200000
 Concurrent Computer Corp           200200001 - 200200007
 AIM Technology                     200300000 - 200399999
 TGV                                200400000 - 200499999
 #
 # Sun-assigned authentication flavor numbers
 #
 AUTH_NONE       0               /* no authentication, see RFC 1831 */
                                 /* a.k.a. AUTH_NULL */
 AUTH_SYS        1               /* unix style (uid+gids), RFC 1831 */
                                 /* a.k.a. AUTH_UNIX */
 AUTH_SHORT      2               /* short hand unix style, RFC 1831 */
 AUTH_DH         3               /* des style (encrypted timestamp) */
                                 /* a.k.a. AUTH_DES, see RFC 2695 */
 AUTH_KERB       4               /* kerberos auth, see RFC 2695 */
 AUTH_RSA        5               /* RSA authentication */
 RPCSEC_GSS      6               /* GSS-based RPC security for auth,
                                    integrity and privacy, RPC 5403 */
 AUTH_NW         30001           NETWARE
 AUTH_SEC        200000          TSIG NFS subcommittee
 AUTH_ESV        200004          SVr4 ES
 AUTH_NQNFS      300000          Univ. of Guelph - Not Quite NFS
 AUTH_GSSAPI     300001          OpenVision <john.linn@ov.com>
 AUTH_ILU_UGEN   300002          Xerox <janssen@parc.xerox.com>
                                  - ILU Unsecured Generic Identity
 #
 #  Small blocks are assigned out of the 39xxxx series of numbers
 #
 AUTH_SPNEGO     390000
                 390000 - 390255 NFS 'pseudo' flavors for RPCSEC_GSS
                 390003 - kerberos_v5 authentication, RFC 2623
                 390004 - kerberos_v5 with data integrity, RFC 2623
                 390005 - kerberos_v5 with data privacy, RFC 2623
                 200000000       Reserved
                 200100000       NeXT Inc.

Thurlow Standards Track [Page 61] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

Normative References

 [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
            Requirement Levels", BCP 14, RFC 2119, March 1997.
 [RFC2203]  Eisler, M., Chiu, A., and L. Ling, "RPCSEC_GSS Protocol
            Specification", RFC 2203, September 1997.
 [RFC4506]  Eisler, M., Ed., "XDR: External Data Representation
            Standard", STD 67, RFC 4506, May 2006.

Informative References

 [DH]       Diffie & Hellman, "New Directions in Cryptography", IEEE
            Transactions on Information Theory IT-22, November 1976.
 [RFC0768]   Postel, J., "User Datagram Protocol", STD 6, RFC 768,
            August 1980.
 [RFC0793]  Postel, J., "Transmission Control Protocol", STD 7, RFC
            793, September 1981.
 [RFC1094]  Sun Microsystems, "NFS: Network File System Protocol
            specification", RFC 1094, March 1989.
 [RFC1813]  Callaghan, B., Pawlowski, B., and P. Staubach, "NFS
            Version 3 Protocol Specification", RFC 1813, June 1995.
 [RFC1831]  Srinivasan, R., "RPC: Remote Procedure Call Protocol
            Specification Version 2", RFC 1831, August 1995.
 [RFC1833]  Srinivasan, R., "Binding Protocols for ONC RPC Version 2",
            RFC 1833, August 1995.
 [RFC2623]  Eisler, M., "NFS Version 2 and Version 3 Security Issues
            and the NFS Protocol's Use of RPCSEC_GSS and Kerberos V5",
            RFC 2623, June 1999.
 [RFC2695]  Chiu, A., "Authentication Mechanisms for ONC RPC", RFC
            2695, September 1999.
 [RFC2743]  Linn, J., "Generic Security Service Application Program
            Interface Version 2, Update 1", RFC 2743, January 2000.
 [RFC3530]  Shepler, S., Callaghan, B., Robinson, D., Thurlow, R.,
            Beame, C., Eisler, M., and D. Noveck, "Network File System
            (NFS) version 4 Protocol", RFC 3530, April 2003.

Thurlow Standards Track [Page 62] RFC 5531 Remote Procedure Call Protocol Version 2 May 2009

 [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
            IANA Considerations Section in RFCs", BCP 26, RFC 5226,
            May 2008.
 [VMTP]     Cheriton, D., "VMTP: Versatile Message Transaction
            Protocol", Preliminary Version 0.3, Stanford University,
            January 1987.
 [XRPC]     Birrell, A. D.  & B. J. Nelson, "Implementing Remote
            Procedure Calls", XEROX CSL-83-7, October 1983.

Author's Address

 Robert Thurlow
 Sun Microsystems, Inc.
 500 Eldorado Boulevard, UBRM05-171
 Broomfield, CO 80021
 Phone: 877-718-3419
 EMail: robert.thurlow@sun.com

Thurlow Standards Track [Page 63]

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