*BSD News Article 14578


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From: jrp7260@hertz.njit.edu (Jeffrey Pych)
Newsgroups: comp.os.386bsd.questions,comp.os.386bsd.misc,comp.os.386bsd.development
Subject: login/password prompts scroll when trying to telnet
Message-ID: <1993Apr16.135329.19423@njitgw.njit.edu>
Date: 16 Apr 93 13:53:29 GMT
Sender: Jeffrey Pych
Organization: New Jersey Institute of Technology, Newark, N.J.
Lines: 62
Nntp-Posting-Host: hertz.njit.edu


Summary:  When trying to telnet to the 386BSD machine from a non-386BSD
          machine, the login/password prompts keep scrolling up the screen.

Hardware:  Both machines are AT&T StarStations 386/33Mhz running over a
	   StarLAN 10 network.

Software:  The non-386BSD machine is running AT&T SYSV R4.0.2.1 and
	   AT&T StarGROUP TCP/IP Software (really Wollongong Group)
           version 4.0 Update 1.

Detail:  Ping and FTP seem to work just fine.  I can telnet to the AT&T
         machine from the 386BSD machine without a problem.  When I
         manually start telnetd on the 386BSD in the debug mode,
         I can then telnet from the AT&T machine just fine!!  I
         have looked at the code for telnetd, but cannot figure out
         what is causing the problem.  Oh yes, I get the following
         diagnostic information when I try to telnet into the
         386BSD machine:

              STATUS IS :
                     WILL ECHO
                     WILL SUPPRESS GO AHEAD
                     WILL STATUS
                     DO   33
              250
              33
              Line mode enabled.
              ECHO
              240

              (Get welcome message, scrolling of login/passwd
               begins)


          When I manually start telnetd with the command
          "/usr/libexec/telnetd -debug 557" and then type
          "telnet <machine name> 557" fro the AT&T machine, I
          get DIFFERENT diagnostic information:

               STATUS IS :
                       DO   Line mode enabled.
               ECHO
                       WILL SUPPRESS GO AHEAD
                       WILL STATUS
                       DO   33
               250
               33
               Character mode enabled.
               ECHO
               240

               (able to login normally)

          telnet seems to be running in character mode here whereas
          before it ran in line mode.  Telnetd has been compiled with
          LINEMODE, USE_TERMIO and DIAGNOSTICS defined.

          All comments welcomed.  Thanks.


Jeff