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Date:      Fri, 15 Jan 1999 12:41:26 -0500
From:      Tod Luginbuhl <tod@science-guy.npt.nuwc.navy.mil>
To:        freebsd-stable@FreeBSD.ORG
Subject:   Problem with telnetd and gettytab if capability
Message-ID:  <369F7DC6.9CB54B6C@science-guy.npt.nuwc.navy.mil>

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Hi,
Several months ago I noticed that when I telneted to my FreeBSD machine,
telnetd responded normally, but then kick me off just prior to getting a
logic prompt.  I've looked into the problem on and off, but didn't
really understand what was going on. Since I didn't see anything in the
mail archives on this problem, I figured I had configured something
incorrectly.  Finally, I got desperate and did a new installed
2.2.8-STABLE from the CDs.  The telnet problem was still there, so I dug
into it.  I guessed that my /etc/issue file was too long and
experimented with a test file.  I found that the /etc/issue file must
contain no more than 1011 bytes for telnetd to work.  telnetd  sort of
works when /etc/issue contains 1012 bytes but generates alot of ptyflush
char errors.  If the /etc/issue files contains more than 1012 bytes,
telnetd kicks out just before giving a login prompt.  I briefly looked
at the source for telnetd, but didn't see anything obvious.  This
problem does not exist in 3.0-RELEASE, and I haven't done a diff between
telnetd.c in 2.2.8 and 3.0 to see what is different in handling the if
capability.  But having gotten this far, I thought I'd inform the list.

Tod



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Tod Luginbuhl                         email:  t.e.luginbuhl@ieee.org
Code 2121                                    
luginbuhl@npt.nuwc.navy.mil
Naval Undersea Warfare Center
1176 Howell Street                    Telephone: (401) 832-8241
Newport, Rhode Island                 FAX:       (401) 832-7453
02841-1708
USA

"Don't argue with drunks and fanatics!" -- Sun Wolf (Barbara Hambly)

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