RFC 466 (rfc466) - Page 2 of 9

Telnet logger/server for host LL-67

RFC 466           TELNET LOGGER/SERVER For Host LL-67      February 1973


                    Operation of the Lincoln Laboratory
                        CP/CMS TELNET LOGGER/SERVER

ICP Connection

   The TELNET LOGGER/SERVER follows the ICP protocol for making a pair
   of connections.  The LOGGER is initially enabled for a connection on
   socket X'00000001'.  When an RFC is received for this socket a pair
   of sockets will be chosen for the TELNET connections.  If the maximum
   number of TELNET users which can be served are active, the initial
   connection is refused.  Currently, three TELNET users can be served.

TELNET LOGGER

   After the ICP connections have been setup, the LOGGER expects a
   TELNET data type code, a string of network ASCII characters, or a
   null line (just CR-LF) to indicate whether its operation should be in
   ASCII or in EBCDIC character codes.  ASCII is assumed unless the
   first byte received is the TELNET EBCDIC data type code (X'A2).  When
   something has been received, the message:

                     Lincoln Laboratory CP/CMS Online

   will be transmitted by the LOGGER.  For example, if ASCII operation
   is desired a null line (just CR-LF) transmitted on the send socket
   will cause the welcoming message to be sent in ASCII.  The CP login
   procedure can then begin.  If communications is desired to be carried
   on with EBCDIC character codes, the first byte transmitted should be
   the TELNET data type code for EBCDIC (X'A2').  Thereafter all
   communications will be in the code originally used.

   The CP login procedure expects the user to enter:

                               LOGIN userid

   where the userid specifies the desired virtual machine.  CP then
   replies with:

                              ENTER PASSWORD:

   followed by the EBCDIC code for bypass (x'24') which is mapped into
   the TELNET code hide-your-input.

   The user should then enter a password.  Passwords entered from the
   network may be different from those entered from a local terminal.
   The LOGGER maps network passwords into a corresponding CP password.
   Thus, access to an account can only be made from the network if a
   network password, together with a CP password and userid, is entered



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