[ale] How do I reset user timeout in ubuntu?

[timothy at meanor.net]

Is there a firewall between you and the remote system?  Firewalls are often configured to kill sessions that have been idle for a certain amount of time.

-Tim

>>If I log into a remote ubuntu system via ssh, and leave the session idle 
>>for a while, I get disconnected.  The disconnect first becomes a dead 
>>session.  Meaning I can not type anything into the session.  Keys don't 
>>work and output obviously doesn't come back.  After a much longer period 
>>of time, I get a "disconnect by remote" message.  timeoutd is not 
>>running on the system.  I looked in sshd_conf for something relevant, 
>>but no luck.  This only happens on this system and there are no messages 
>>in syslog/message/auth. 
>>
>>Can anyone suggest where the timeout is occurring?
>>
>>Thanks,
>>Jim.
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