From: Patrick McHardy <kaber@trash.net>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: W Agtail <wagtail@iol.ie>, netdev@vger.kernel.org
Subject: Re: two gateways with one NIC
Date: Mon, 09 Apr 2007 18:13:50 +0200 [thread overview]
Message-ID: <461A663E.4050904@trash.net> (raw)
In-Reply-To: <20070409161142.GC2299@csclub.uwaterloo.ca>
Lennart Sorensen wrote:
> On Mon, Apr 09, 2007 at 04:56:20PM +0100, W Agtail wrote:
>
>>Hi there, and thanks v. much for getting back to me on this one.
>>I now have changed iptables on the web servers to the following:
>>
>>iptables -t mangle -A POSTROUTING -p tcp --sport 8088 -o eth0 -j MARK
>>--set-mark 1
>>iptables -t mangle -A POSTROUTING -p tcp --sport 8089 -o eth0 -j MARK
>>--set-mark 2
>>
>>But I'm still seeing traffic being returned via gw2 for port 8088 :(
>>Any ideas? Thanks.
>
>
> Hmm, I know I have done something like this before (I made all port 80
> traffic return through another host rather than the default gateway, but
> it was about 3 years ago and I don't remember the exact syntax).
As the name suggests, POSTROUTING comes after routing, so marking
packets there doesn't affect routing. Use PREROUTING for forwarded
traffic and OUTPUT for locally generated traffic.
next prev parent reply other threads:[~2007-04-09 16:13 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-08 3:35 two gateways with one NIC W Agtail
2007-04-08 15:01 ` Lennart Sorensen
2007-04-08 16:10 ` W Agtail
2007-04-08 18:22 ` Lennart Sorensen
2007-04-08 19:29 ` W Agtail
2007-04-09 14:54 ` Lennart Sorensen
2007-04-09 15:56 ` W Agtail
2007-04-09 16:11 ` Lennart Sorensen
2007-04-09 16:13 ` Patrick McHardy [this message]
2007-04-09 16:19 ` Lennart Sorensen
2007-04-09 17:02 ` W Agtail
2007-04-09 17:14 ` Patrick McHardy
2007-04-09 17:23 ` Lennart Sorensen
2007-04-09 18:05 ` W Agtail
2007-04-09 18:11 ` Ben Greear
2007-04-10 13:46 ` W Agtail
2007-04-10 15:32 ` Ben Greear
2007-04-11 15:38 ` W Agtail
2007-04-09 18:11 ` Lennart Sorensen
2007-04-09 18:24 ` W Agtail
2007-04-09 21:23 ` Lennart Sorensen
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