UseLogin under AIX 4.3.3

[Edward Geraghty]

Hey Doug,

      This is probably the well known /var/adm/wtmp, /etc/utmp  corruption
bug.
There is a IBM tech note to fix this but basically just backup and clear
/var/adm/wtmp and
/etc/utmp. This can be done in any method you like "cat /dev/null >
filename". Also check
to see that your diskspace for / and /var is not filled. I think this
problem came about
when disk space fills and utmp/wtmp are incompletely written.

EdGy


"Manton, Doug" <dmanton at emea.att.com>@mindrot.org on 02/28/2002 06:49:32

Sent by:    openssh-unix-dev-admin at mindrot.org


To:    openssh-unix-dev at mindrot.org
cc:
Subject:    UseLogin under AIX 4.3.3




Hi,

If I enable  "UseLogin" under AIX, I get the following message upon  login:

  /dev/pts/2:  3004-004 You must "exec" login from the lowest login shell.

The manpage  states:

"In order to  preserve the integrity of the system, only one session at a
time is
allowed  to be logged in to a port. This means that the login command
entered
from the  shell prompt cannot succeed, as both the original session and the
new
login  session would be on the same port. However, the exec login command
succeeds  because a new shell replaces the current one. The login command
is
typically  a built-in shell command, causing the shell to replace  itself."

Any ideas how I  could fix this?  I wouldn't usually enable this option,
but I am trying to  PD a problem on a system that will not trust a user
account that comes in via  SSH and I am hoping that using login will solve
the problem.

Many  thanks,

Doug Manton, AT&T Business Commercial  Security