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Date:      Thu, 8 Jun 2006 09:34:16 -0400
From:      "Chris Buechler" <cbuechler@gmail.com>
To:        "Dominic Marks" <dom@helenmarks.co.uk>
Cc:        freebsd-stable@freebsd.org, freebsd-pf@freebsd.org
Subject:   Re: pf buggy on 6.1-STABLE?
Message-ID:  <d64aa1760606080634q2136fd4eqc6aa790fd3cad33c@mail.gmail.com>
In-Reply-To: <4459.195.12.22.194.1149757864.squirrel@mail.helenmarks.co.uk>
References:  <44876071-491e@helpdesk.islandnet.com> <4459.195.12.22.194.1149757864.squirrel@mail.helenmarks.co.uk>

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On 6/8/06, Dominic Marks <dom@helenmarks.co.uk> wrote:
>
> I've experienced the same. If you have a lot of concurrent connections
> going on it seems that every so often an connection will be blocked,
> even if it doesnt match any rule. In my case I experienced this with
> apache22 acting as a reverse proxy/virtual host.
>

This sounds a lot like the port randomization problems discussed by
Michael Silbersack in his BSDCan presentation.  specifically, pages
12-14.  http://www.silby.com/bsdcan06/silbersack_bsdcan06.pdf

That shouldn't be an issue anymore, but I don't know when that was resolved.

cheers,
-Chris



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