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Posted by on June 10, 2006, 1:03 pm
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I have a machine in my company's data center I've accessed via SSH for
a couple years. Yesterday my remote ssh connection stopped working. I
could connect to the box, enter my username and password and the screen
would just hang and eventually return a connection terminated
notification.
We went to the actual box and got console access - no problems with any
accounts, and tested ssh to localhost - no problems. Reviewing the logs
we could see our incoming connection requests in the system logs with
the following error:
sshd [ xxxxx ] FAIL authentication timeout connection xxx.xxx.xxx.xxx (
or something similar ).
So it looks like the first request is received by the box because the I
can attempt to log on, but the login credentials are not making their
way back.
We have stopped and restarted SSH several times, checked the hosts
allowed files, but we can ssh to localhost and can reach the box with
the connection attempt.
This is a NATed address only accessible from our network. The external
addresses for the web server seem to be running fine.
Any ideas? The timeout makes me think it could be a firewall issue, but
I am far from an expert.
thanks - John
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