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From: prabha <prabha@multitech.co.in>
To: netfilter@lists.netfilter.org
Subject: Subject: Problem with SNAT and same port number
Date: Mon, 23 Feb 2004 11:40:00 +0530	[thread overview]
Message-ID: <40399938.AE4CE1DD@multitech.co.in> (raw)
In-Reply-To: 20040223052721.8508.52386.Mailman@netfilter-sponsored-by.noris.net

Hi

>I am wanting to change the source address of outgoing packets that have a src
>port of 53.
> I have tried /sbin/iptables -A POSTROUTING -p tcp -t nat -o bond0 --sport 53
>-j SNAT --to-source 192.168.0.1:53

If my understanding is correct, you want to do SNAT but without changing the
source port number. The above command should work.
Can you check out if your DNS requests are on TCP or UDP? If they are on UDP,
you may need to extend the above rule for UDP also.

Regards
Prabha



       reply	other threads:[~2004-02-23  6:10 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20040223052721.8508.52386.Mailman@netfilter-sponsored-by.noris.net>
2004-02-23  6:10 ` prabha [this message]
2004-02-23  6:21   ` Subject: Problem with SNAT and same port number netfilter

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