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Date:      Thu, 1 Aug 2002 01:22:41 -0700
From:      Luigi Rizzo <luigi@freebsd.org>
To:        "Andrey A. Chernov" <ache@nagual.pp.ru>
Cc:        current@freebsd.org
Subject:   Re: IPFW2 may cause incoming connections to hang
Message-ID:  <20020801012241.A72759@iguana.icir.org>
In-Reply-To: <20020801081103.GA1779@nagual.pp.ru>; from ache@nagual.pp.ru on Thu, Aug 01, 2002 at 12:11:05PM %2B0400
References:  <20020801081103.GA1779@nagual.pp.ru>

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On Thu, Aug 01, 2002 at 12:11:05PM +0400, Andrey A. Chernov wrote:
> I notice reproductible effect on my recent -current remote machine, after
> 5-7 hours of normal work, I can't connect to this machine via
> ssh,telnet,pop3 or ftp, but smtp and http continue to work normally.
> 
> When I turn ipfw2 off, this effect is gone. It was never happened for old
> ipfw with the same settings.
> 
> I have simple "open" firewall type with one "deny" rule for specific tcp
> port. Since this is remote machine, I can't login and see what actually
> happens during this effect. I also notice that if current connection stays
> across beginning of effect, it continue to work, but new ones hangs.

could you send me your exact ruleset ? Also, does this happen
at specific times (e.g. after some cron task) or not ?

	cheers
	luigi

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