I switched wifi routers. The new model, a Linksys WRT3200ACM kills my idle SSH sessions.

I have /etc/ssh/sshd_config.d/01-local.conf that has a "ClientAliveInterval" setting.

With my previous router setting ClientAliveInterval to 60 seconds was enough to keep it from killing my idle SSH sessions.

But this little bastard keeps killing my ssh sessions even with a 30 second ClientAliveInterval timeout. Yet, after an artificial sleep(30) the ssh session is still alive.

I used tcpdump to confirm that there's activity going on at 30 second intervals when the session is idle. This must mean that this little bastard detects clientalive ssh packets, for the purposes of timing out connections. Very rude.

Anyone have any tips for defeating this rudeness, short of a brute force approach.


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