From: netfilter@serverguy.net
To: prabha <prabha@multitech.co.in>, netfilter@lists.netfilter.org
Subject: Re: Subject: Problem with SNAT and same port number
Date: Mon, 23 Feb 2004 16:21:22 +1000 [thread overview]
Message-ID: <200402231621.22177.netfilter@serverguy.net> (raw)
In-Reply-To: <40399938.AE4CE1DD@multitech.co.in>
Hi,
Yes, I do include udp as well. A tcpdump shows traffic two and from until I
insert that rule, then there is no return traffic sent, its as though its
being silently dropped, because nothing is in the logs either. If I change
the port to 52, the return traffic apears, but of course, on the wrong port.
> 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
prev parent reply other threads:[~2004-02-23 6:21 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 ` Subject: Problem with SNAT and same port number prabha
2004-02-23 6:21 ` netfilter [this message]
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