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Date:	Thu, 27 Sep 2007 07:48:37 -0300
From:	Alan Menegotto <macnish@...il.com>
To:	Gaurav Aggarwal <grv.aggarwal@...il.com>
CC:	kernelnewbies@...linux.org, linux-net@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: Linux networking implementation and packet capture

Gaurav Aggarwal escreveu:
> Hi,
>
> I am trying to understand the implementation of linux 2.4 and linux 
> 2.6's networking (IPV4) . Can anyone give me some idea/pointers about 
> some of the good resources/whitepapers available in the market to 
> understand the same. If there is any document that mention the changes 
> between the implementation of networking in 2.4 & 2.6
>
> I am also trying to write a simple program(preferably a userspace 
> application) which captures all the incoming and outgoing packets of a 
> particular machine (preferably at PREROUTING stage), then according to 
> the SRC/DST addresses, changes the IP address of some of the packets 
> and then reinject it back into the local IP stack. I am able to do 
> that in 2.4 kernel by using libipq and ip_tables but that prog is not 
> running in 2.6 kernel. (It hits at ip_route_BUG). Any idea or code 
> snippet will be really appreciated.
>
> -- 
> Regards,
> Gaurav Aggarwal
>
You may also see the information on the linux-net wiki: 
http://linux-net.osdl.org/index.php/Main_Page.

Also, read some threads on netdev list. It has a lot of information 
there too.





-- 


--
Best Regards

Alan Menegotto

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