From: Julien Vehent <julien@linuxwall.info>
To: Fabio Marcone <fabio.marcone@duet.it>
Cc: netfilter@vger.kernel.org
Subject: Re: postrouting and mac address
Date: Tue, 21 Jul 2009 14:20:18 +0200 [thread overview]
Message-ID: <c7a3bdd5fcb7f7152ae1a453651aa9d1@localhost> (raw)
In-Reply-To: <4A65AF17.70002@duet.it>
On Tue, 21 Jul 2009 14:05:43 +0200, Fabio Marcone <fabio.marcone@duet.it>
wrote:
> Hi!
> I have a router linux and I need to filter packets in postrouting chain
> using source mac address. But... in postrouting chain, what is source
> mac address? mac address of effective source of the packet or router
> interface mac address ?
>
> Thanks in advance,
> Fabio
Hi Fabio,
I don't think you can filter packets in postrouting.
The only tables available in POSTROUTING are mangle and nat.
To filter packets in a router, I think you have to do it in the FORWARD
chain.
see: http://jengelh.medozas.de/images/nf-packet-flow.png
Julien
--
julien
http://jve.linuxwall.info/blog
next prev parent reply other threads:[~2009-07-21 12:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-21 12:05 postrouting and mac address Fabio Marcone
2009-07-21 12:20 ` Julien Vehent [this message]
2009-07-21 13:10 ` Fabio Marcone
2009-07-21 13:24 ` Fabio Marcone
2009-07-21 13:30 ` Pascal Hambourg
2009-07-21 13:36 ` Fabio Marcone
2009-07-21 13:53 ` Gáspár Lajos
2009-07-21 13:59 ` Pascal Hambourg
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