From owner-freebsd-stable@FreeBSD.ORG  Fri Nov  4 13:18:56 2011
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 1FFA81065674
	for <freebsd-stable@freebsd.org>; Fri,  4 Nov 2011 13:18:56 +0000 (UTC)
	(envelope-from lists@c0mplx.org)
Received: from home.opsec.eu (home.opsec.eu [IPv6:2001:14f8:200::1])
	by mx1.freebsd.org (Postfix) with ESMTP id D7E968FC14
	for <freebsd-stable@freebsd.org>; Fri,  4 Nov 2011 13:18:55 +0000 (UTC)
Received: from pi by home.opsec.eu with local (Exim 4.72 (FreeBSD))
	(envelope-from <lists@c0mplx.org>) id 1RMJfc-0008nZ-LV
	for freebsd-stable@freebsd.org; Fri, 04 Nov 2011 14:18:56 +0100
Date: Fri, 4 Nov 2011 14:18:56 +0100
From: Kurt Jaeger <lists@c0mplx.org>
To: freebsd-stable@freebsd.org
Message-ID: <20111104131856.GD68080@home.opsec.eu>
References: <20111103155258.GA68080@home.opsec.eu>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20111103155258.GA68080@home.opsec.eu>
Subject: Re: fbsd 8.2, L2TP over IPsec and pf ?
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 04 Nov 2011 13:18:56 -0000

Hi!

> I'm building a setup for incoming L2TP over IPsec connections
> using FreeBSD 8.2-REL.
> 
> IPsec based on ports/security/ipsec-tools, the l2tp part
> works from net/mpd5/.
> 
> If I disable the PF rules, everything works.
> 
> If I enable the PF rules, the IPsec connection still comes up,
> but the L2TP requests are lost somewhere in the PF rules 8-(
> 
> Interestingly, tcpdump enc0 does not see any encrypted packets (!)
> as long as the PF rules are active.
> 
> Any hints on the PF rules required to allow those packets in ?

Turns out: ESP in/out was missing. set debug misc in the pf.conf
is worth a lot 8-)

Thanks for all help (by private mail).

I'll try to document this setup on some webpage (but this will take
1-2 month due to other projects 8-(

-- 
pi@opsec.eu            +49 171 3101372                         9 years to go !