rname/password systems are not acceptable in IETF standards.
4.1.2. Challenge Response and One Time Password... d be
defended against.
Authors of internet standards MUST describe which denial of service
attacks ... .
Note: In general, the IESG will not approve standards track protocols
which do not provide for stron... nore
the broader threat environment. All IETF standards-track protocols
are considered likely to have