Have a look at http://www.sshkeychain.org
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I need to have ssh automatically restart if it's closed - unattended.
I have a reverse shell that I need to keep connected.
$ ssh -NR 3333:localhost:22 myhost.remote.com
So that I can open a shell on myhost with $ ssh -p 3333 localhost.
The problem is that the connection sometimes 'times out' after a few hours, or less, and i need to monitor it and restart it when it fails. I do not have 'auto-login' set up, but i can do that myself, or it'd be nice to share points with someone who links to a tutorial to automatically use ssh/scp, etc without a password.
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Answers
There are two ways to avoid SSh timeout.. one is to set it on the server and the other on the client,
ClientAliveInterval 60 (On the server)
This would send a message to the client every 60 seconds to request a response thereby keeping the connection open.
ServerAliveInterval 60 (On the SSH client)
This would send a message to the server every 60 seconds to request a response thereby keeping the connection open.
check the man page for sshd_config for mroe details.
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by: mrcustardPosted on 2009-10-22 at 16:24:20ID: 25640062
Is it sshd that dies or just that reverse tunnel? Also do you have a timeout set? Do you notice that the tunnel drops every hour, 2 hours, or just randomly?
If it's a network issue that causes the problem for a quick work around you could use a cron job that runs at a pre-determined interval (1 minute, 5 minutes) that runs a script that will check SSH and restart it.
Thanks,
M.