From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: Filter input traffic by uid
Date: Tue, 25 Jan 2011 15:06:05 +0100
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Cc: netfilter-devel <netfilter-devel@vger.kernel.org>
To: Glauco Junquera <glaucoaok@gmail.com>
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On 25.01.2011 13:04, Glauco Junquera wrote:
> Hi All,
> 
> Iptables can filter output traffic by uid, for example iptables -A
> OUTPUT -m owner --uid-owner 100 -p udp -j DROP.
> I need to implement the same for input traffic. Anyone have any idea
> of how can i do it (where i must start)? I am new to netfilter
> development i tried some simple modifications on code with no success.
> I would really appreciate any kind of help.

I've added socket layer hooks a couple of years ago for that
purpose, but we've never merged it. James Morris based some
work on them, I think this should be the latest version:

http://people.redhat.com/jmorris/selinux/skfilter/kernel/