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From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
To: netfilter@buglecreek.com
Cc: netfilter@vger.kernel.org
Subject: Re: Correct Chains to Apply Rules
Date: Tue, 17 May 2011 23:29:03 +0200	[thread overview]
Message-ID: <4DD2E89F.30801@plouf.fr.eu.org> (raw)
In-Reply-To: <1305666891.6262.1453014301@webmail.messagingengine.com>

Hello,

netfilter@buglecreek.com a écrit :
> 
> In the following scenario.  Someone makes a new HTTP request from the
> Internet that is allowed inbound on eth0 and goes out of the eth1
> interface to the HTTP server in the server network. 
> The HTTP server in the server network sends the response to the original
> requester.  
> 
> Does the response ever hit the INPUT chain of ETH1?

No.

> Or does it immediately go to the FORWARD chain

Yes.

> and out the OUTPUT chain of eth0.  

No.
The three filter chains are mutually exclusive : a packet can only go
through one of them. Forwarded packets only go through the FORWARD chain.

  reply	other threads:[~2011-05-17 21:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-17 21:14 Correct Chains to Apply Rules netfilter
2011-05-17 21:29 ` Pascal Hambourg [this message]
2011-05-17 21:50   ` netfilter
2011-05-17 22:06     ` Jorge Dávila
2011-05-17 22:19     ` Andrew Beverley

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