From: "James R. Leu" <jleu@mindspring.com>
To: cranium2003 <cranium2003@yahoo.com>
Cc: net dev <netdev@oss.sgi.com>
Subject: Re: Linux Routers working
Date: Fri, 13 May 2005 09:09:38 -0500 [thread overview]
Message-ID: <20050513140938.GB5384@mindspring.com> (raw)
In-Reply-To: <20050513041623.95169.qmail@web41425.mail.yahoo.com>
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On Thu, May 12, 2005 at 09:16:23PM -0700, cranium2003 wrote:
> Hello,
> Is there any way on linux routers to know on
> which interface packet is forwarded before actually
> packet trasmission begins? Also before packet
> processed by IP layer can it be possible to know from
> which adjecent Router'IP packet came to that router?
> regards,
> cranium
I think the OUTPUT chain in iptables already knows what the outbound
interface is, so you could make a decision based on that.
I think you can use the mac target in the PREROUTING chain to get access
to the source MAC address.
I think all of your answers are in iptables.
>
>
>
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--
James R. Leu
jleu@mindspring.com
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next prev parent reply other threads:[~2005-05-13 14:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-13 4:16 Linux Routers working cranium2003
2005-05-13 14:09 ` James R. Leu [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-05-13 6:09 cranium2003
2005-06-04 9:08 ` Jonas Berlin
2005-05-13 4:15 cranium2003
2005-05-13 5:24 ` Jonas Berlin
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