From owner-freebsd-net@FreeBSD.ORG Thu Apr 7 17:35:10 2005 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6D7B616A4CE for ; Thu, 7 Apr 2005 17:35:10 +0000 (GMT) Received: from transport.cksoft.de (transport.cksoft.de [62.111.66.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8058B43D39 for ; Thu, 7 Apr 2005 17:35:09 +0000 (GMT) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from transport.cksoft.de (localhost [127.0.0.1]) by transport.cksoft.de (Postfix) with ESMTP id 503951FF9AB; Thu, 7 Apr 2005 19:35:07 +0200 (CEST) Received: by transport.cksoft.de (Postfix, from userid 66) id 44A4D1FF9A8; Thu, 7 Apr 2005 19:35:05 +0200 (CEST) Received: by mail.int.zabbadoz.net (Postfix, from userid 1060) id 2855815384; Thu, 7 Apr 2005 17:31:39 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.int.zabbadoz.net (Postfix) with ESMTP id 2608815329; Thu, 7 Apr 2005 17:31:39 +0000 (UTC) Date: Thu, 7 Apr 2005 17:31:39 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@e0-0.zab2.int.zabbadoz.net To: John Mok In-Reply-To: <42556B7E.5030703@attglobal.net> Message-ID: References: <42555C87.7030700@attglobal.net> <425550E6.3080005@fsklaw.com> <42556B7E.5030703@attglobal.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS cksoft-s20020300-20031204bz on transport.cksoft.de cc: freebsd-net@freebsd.org cc: tms3@fsklaw.com Subject: Re: FreeBSD Firewall + NAT Traversal + IPsec X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Apr 2005 17:35:10 -0000 On Fri, 8 Apr 2005, John Mok wrote: Hi, > Thank you for your quick reply. > > I would like to know more on the issue. To my understanding, since the > source address of the IP packet from the client would be modified on the > NAT, normally it would fail AH check on the IPsec VPN gateway, or the > FreeBSD NAT has built-in compliance with RFC3947? NAT-T is not supported by FreeBSD. -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT