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Date:      Thu, 14 Mar 2002 12:26:27 -0500
From:      "Dan Langille" <dan@langille.org>
To:        Chris Johnson <cjohnson@palomine.net>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: ipfilter keep state broken?
Message-ID:  <20020314172627.DEF953F0E@bast.unixathome.org>
In-Reply-To: <20020314121048.A43100@palomine.net>
References:  <20020314164723.4E1543F0E@bast.unixathome.org>; from dan@langille.org on Thu, Mar 14, 2002 at 11:47:21AM -0500

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On 14 Mar 2002 at 12:10, Chris Johnson wrote:

> On Thu, Mar 14, 2002 at 11:47:21AM -0500, Dan Langille wrote:
> > I upgraded my webserver on March 9 from the post 4.5-RELASE stable.  Today 
> > I've been noticing very unusal access issues on the box.  For example, I 
> > could not get to my webserver from one remote box using https.  I had to 
> > change my rules before it would work:
> > 
> > Here is the after and before.  I had to replace the keep state with two 
> > rules (a.c.b.d is the IP address in question):
> > 
> > < pass in  quick proto tcp from a.b.c.d/32  to any port = https
> > < pass out quick proto tcp from any to a.b.c.d/32  port = https
> > ---
> > > pass in quick proto tcp from a.b.c.d/32  to any port = https flags S keep state
> 
> Could it be that this didn't actually fix your problem but that you made some
> other change in the process? For example, did you flush your state table? Is it
> possible that it was getting full?

I agree with your theory.  Thank you.

After doing an ipf -FS to clear the state table, everything was still 
working fine.  Then I reinstated my keep state rules and things went back 
to normal.

Any suggestions to avoid this problem in future?  Thanks.
-- 
Dan Langille
The FreeBSD Diary - http://freebsddiary.org/ - practical examples


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