[j-nsp] Juniper SRX and ssh freeze

Chris Adams cmadams at hiwaay.net
Mon Dec 20 11:18:27 EST 2010

Once upon a time, Maciej Jan Broniarz <gausus at gausus.net> said:
> I have a bunch of servers connected to an Juniper SRX. When I log on them via ssh everything is fine, but when I leave the session idle for a few minutes it freezes and i have to close the connection and login again. What might be the issue here?
> The problem only occurs when I connect to a server behind an SRX device.

I don't know about the SRX, but I know with the SSG, the ScreenOS
default timeout for TCP sessions was way too low (IIRC something like 5
minutes) and would cause that.  I turned on SSH keepalives to avoid the

Chris Adams <cmadams at hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.

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