5.4 SSH Timeout help
Sean Murphy
smurphy at calarts.edu
Mon Sep 12 14:56:08 PDT 2005
Will Maier wrote:
> On Mon, Sep 12, 2005 at 11:24:19AM -0700, Sean Murphy wrote:
>
>>I SSH into the server with no problem and I'm able to do work
>>however when I walk away from my desk SSH closes the session. It
>>seems the timeout is 5 or 10 min how can I change this setting for
>>all of our users?
>
>
> What shell are the users using? If they're using 'tcsh' or certain
> other shells, they might be running up against the shell's
> autologout option. See the man page for tcsh (1):
>
> | The first word is the number of minutes of inactivity before
> | automatic logout. The optional second word is the number of minutes
> | of inactivity before automatic locking. When the shell
> | automatically logs out, it prints `auto-logout', sets the variable
> | logout to `automatic' and exits. When the shell automatically
> | locks, the user is required to enter his password to continue
> | working. Five incorrect attempts result in automatic logout. Set to
> | `60' (automatic logout after 60 minutes, and no locking) by default
> | in login and superuser shells, but not if the shell thinks it is
> | running under a window system (i.e., the DISPLAY environment
> | variable is set), the tty is a pseudo-tty (pty) or the shell was
> | not so compiled (see the version shell variable). See also the
> | afsuser and logout shell variables.
>
There was no timeout option with the shell I was using (the bourne shell
/bin/sh) However I did find the problem. The router was timing out NAT
translations after 10 min of no packets transversing. This corresponded
to my timeout. I fixed the problem by editing the /etc/ssh/sshd_config
Uncommenting the line
ClientAliveInterval 300
and restarted sshd
This fixed my problem.
Thanks
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