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Date:      Tue, 10 Apr 2001 08:44:58 -0500
From:      Mike Meyer <mwm@mired.org>
To:        Trevin Chow <tmchow@sfu.ca>
Cc:        questions@freebsd.org
Subject:   Re: Firewall rules causing SSH disconects?
Message-ID:  <15059.3674.113378.787412@guru.mired.org>
In-Reply-To: <66577732@toto.iv>

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Trevin Chow <tmchow@sfu.ca> types:
> I'm just wondering what possible firewall rules (if any) could cause
> problems with random SSH disconnections. I'm trying to troubleshoot my
> situation here, and I'm unsure if it has to do with failing routers on the
> internet somewhere, or my own configuration.
> 
> The situatino is basically that I'm able to connect via SSH to my box
> remotely, but I'll get disconnected after a varying amount of time.
> 
> Is it possible that a firewall rule is causing this? I wouldn't think
> so..but I could be wrong.  Anyone else have any ideas about this? someone
> else mentioned to try turning "KeepAlive" to off to see what happens, but
> that didn't solve anything.

A dynamic firewall rule with a timeout that's to short might cause
this.

I've also had problems with firewalls that leaked memory, and
basically just reset everything at random times. Since I was the only
person who left open connections through the firewall, as well as the
only person who's desktop wasn't Windows, I was the only person who
noticed more than an occasional hiccup.

	<mike
--
Mike Meyer <mwm@mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.

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