RFC 1412 (rfc1412) - Page 3 of 4

Telnet Authentication: SPX

RFC 1412                     SPX for Telnet                 January 1993


       Client                           Server
                                        IAC DO AUTHENTICATION
       IAC WILL AUTHENTICATION

       [ The server is now free to request authentication information.
         ]

                                        IAC SB AUTHENTICATION SEND SPX
                                        CLIENT|MUTUAL SPX CLIENT|ONE_WAY
                                        IAC SE

       [ The server has requested mutual SPX authentication.  If mutual
         authentication is not supported, then the server is willing to
         do one-way SPX authentication.  ]

       [ The client will now respond with the name of the user that it
         wants to log in as, and the SPX authentication token.  ]

       IAC SB AUTHENTICATION NAME
       "pete" IAC SE
       IAC SB AUTHENTICATION IS SPX
       CLIENT|MUTUAL AUTH  IAC SE

       [ The server responds with an ACCEPT command to state that the
         authentication was successful.  ]

       [ If AUTH_HOW_MUTUAL, the server responds with the mutual
         response so the client can verify that it is really talking to
         the right server.  ]

       [ If AUTH_HOW_ONE_WAY, the server responds with a NULL mutual
         response, since the client is willing to trust the server
         already.  ]

                                        IAC SB AUTHENTICATION REPLY SPX
                                        CLIENT|MUTUAL ACCEPT  IAC SE












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