RFC 2941 (rfc2941) - Page 1 of 15

Telnet Authentication Option

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Network Working Group                                     T. Ts'o, Editor
Request for Comments: 2941                               VA Linux Systems
Obsoletes: 1416                                                 J. Altman
Category: Standards Track                             Columbia University
                                                           September 2000


                      Telnet Authentication Option

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) The Internet Society (2000).  All Rights Reserved.

Abstract

   This document describes the authentication option to the telnet [1]
   protocol as a generic method for negotiating an authentication type
   and mode including whether encryption should be used and if
   credentials should be forwarded.  While this document summarizes
   currently utilized commands and types it does not define a specific
   authentication type.  Separate documents are to be published defining
   each authentication type.

   This document updates a previous specification of the telnet
   authentication option, RFC 1416 [2], so that it can be used to
   securely enable the telnet encryption option [3].

1.  Command Names and Codes

      AUTHENTICATION          37

          Authentication Commands
          IS                       0
          SEND                     1
          REPLY                    2
          NAME                     3

          Authentication Types
          NULL                     0
          KERBEROS_V4              1



Ts'o & Altman               Standards Track
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