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From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
To: Curby <curby@cur.by>
Cc: netfilter@vger.kernel.org
Subject: Re: chain/table traversal for loopback packets
Date: Thu, 13 May 2010 21:52:35 +0200	[thread overview]
Message-ID: <4BEC5883.6000309@plouf.fr.eu.org> (raw)
In-Reply-To: <AANLkTikgvzyLOesxU5RNb3MmEPPMsnotOj-oZcWGlkuT@mail.gmail.com>

Hello,

Curby a écrit :
> Hello, I'm trying to understand
> http://www.frozentux.net/iptables-tutorial/images/tables_traverse.jpg
> 
> Would a packet created locally and sent over the loopback interface
> traverse the POSTROUTING and PREROUTING hooks as implied by the
> diagram,

Yes. However be aware that the nat/PREROUTING chain is skipped even for
the first packet of a new connection because at that stage the
connection is already confirmed. Thus destination NAT must be performed
in OUTPUT.

> or does the last Routing Decision notice that it's bound for
> the local host and send it straight to the beginning of the INPUT
> hook?

No.

  reply	other threads:[~2010-05-13 19:52 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-13 18:19 chain/table traversal for loopback packets Curby
2010-05-13 19:52 ` Pascal Hambourg [this message]
2010-05-13 19:53 ` Jan Engelhardt
2010-05-13 20:00   ` Curby

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