lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 09 Apr 2007 18:13:50 +0200
From:	Patrick McHardy <>
To:	Lennart Sorensen <>
CC:	W Agtail <>,
Subject: Re: two gateways with one NIC

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.

To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists