From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Leblond <eric@inl.fr>
Subject: Re: how to use NF_QUEUE
Date: Wed, 09 Feb 2005 12:31:08 +0100
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Le mercredi 09 f=E9vrier 2005 =E0 03:16 -0800, vinay mathew a =E9crit :=20
> Hi,
> I am a newbie regarding Netfilter.I need to use the
> Netfilter hooks for a project. I have tried out the
> hook functions using NF_ACCEPT, NF_DROP.I need to use
> NF_QUEUE to queue certain packets to the user space
> where i need to process them further and then send
> these packets back into the network stack.
> I have not done this before so does anyone have some
> simple sample code using this option so that i can get
> a start on how its done.

Use libipq, it's the easiest way to send packet to userspace and put
them back in the network stack. The man page contains some examples.=20

For a more concrete example you can have a look at the nufw project
(http://www.nufw.org).
The file src/nufw/packetsrv.c and src/nufw/authsrv.c contain code
example.

BR,
--=20
=C9ric Leblond, eleblond@inl.fr
T=E9l=E9phone : 01 44 89 46 40, Fax : 01 44 89 45 01
INL, http://www.inl.fr