From owner-freebsd-ipfw@FreeBSD.ORG  Mon May 19 14:18:32 2008
Return-Path: <owner-freebsd-ipfw@FreeBSD.ORG>
Delivered-To: freebsd-ipfw@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 6F1FC106566B
	for <freebsd-ipfw@freebsd.org>; Mon, 19 May 2008 14:18:32 +0000 (UTC)
	(envelope-from oleksandr@samoylyk.sumy.ua)
Received: from mail.telesweet.net (news.telesweet.net [194.110.252.16])
	by mx1.freebsd.org (Postfix) with ESMTP id EECBE8FC1E
	for <freebsd-ipfw@freebsd.org>; Mon, 19 May 2008 14:18:31 +0000 (UTC)
	(envelope-from oleksandr@samoylyk.sumy.ua)
Received: from localhost (localhost [127.0.0.1])
	by mail.telesweet.net (Postfix) with ESMTP id 18156B83B;
	Mon, 19 May 2008 17:18:29 +0300 (EEST)
X-Virus-Scanned: by Telesweet Mail Virus Scanner
X-Spam-Flag: NO
X-Spam-Score: -1.44
X-Spam-Level: 
X-Spam-Status: No, score=-1.44 tagged_above=-999 required=5
	tests=[ALL_TRUSTED=-1.44]
Received: from [10.0.0.109] (pigeon-work.telesweet [10.0.0.109])
	by mail.telesweet.net (Postfix) with ESMTP id 60BD9B825;
	Mon, 19 May 2008 17:18:14 +0300 (EEST)
Message-ID: <48318C25.2090703@samoylyk.sumy.ua>
Date: Mon, 19 May 2008 17:18:13 +0300
From: Oleksandr Samoylyk <oleksandr@samoylyk.sumy.ua>
User-Agent: Thunderbird 2.0.0.14 (X11/20080505)
MIME-Version: 1.0
To: Paolo Pisati <piso@freebsd.org>
References: <48307AAE.9010906@samoylyk.sumy.ua> <20080519141602.GB7648@tin.it>
In-Reply-To: <20080519141602.GB7648@tin.it>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-ipfw@freebsd.org
Subject: Re: ipfw and smtp port rewriting
X-BeenThere: freebsd-ipfw@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: IPFW Technical Discussions <freebsd-ipfw.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ipfw>,
	<mailto:freebsd-ipfw-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ipfw>
List-Post: <mailto:freebsd-ipfw@freebsd.org>
List-Help: <mailto:freebsd-ipfw-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ipfw>,
	<mailto:freebsd-ipfw-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 19 May 2008 14:18:32 -0000

Paolo Pisati wrote:
> On Sun, May 18, 2008 at 09:51:26PM +0300, Oleksandr Samoylyk wrote:
>> Hello freebsd-ipfw,
>>
>> I'd like to make smtp port rewriting for any destination by means of ipfw.
>>
>> With iptables I just used this rule in order to achieve this functionality:
>>
>> iptables -t nat -A PREROUTING -i ppp+ -p tcp --dport 2525 -j DNAT 
>> --to-destination :25
> 
> ipfw nat 123 config redirect_port tcp YOURIP:2525 25 
> ipfw add nat 123 tcp from any to any
> 
> or something along the line.
> 

Will it work for any destination?

-- 
  Oleksandr Samoylyk
  OVS-RIPE