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Date: Fri, 5 Jun 2020 20:27:49 +0000 (UTC)
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>,
        "Frances B. Webb" <frances DOT webb AT cornell DOT edu>
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Subject: Re: trouble maintaining an open ssh connection past 20 minutes
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From: Kevin Schnitzius via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Kevin Schnitzius <kometes AT yahoo DOT com>
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> This is a problem that I noticed last summer when I updated to openssh 8.0 in the Cygwin package installer. At the time, I was able to resolve the
> issue temporarily by reverting to version 7.9. I applied updates this morning, and openssh 8.3 was installed, and the problem is back. It consistently 
> loses connection to remote servers I've ssh'd to after 20 minutes, regardless of session activity.

I'm running 8.2p1-1 on both the client and server with an RDP session tunneled and it stays open for weeks.  It typically only fails when my DSL drops at home.

You will probably need to do a network capture on both ends and see what is happening on the wire.  I'm betting it's your ISP.


Kevin
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