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filtering packtes before OS takes care about them

To: <netdev@xxxxxxxxxxx>
Subject: filtering packtes before OS takes care about them
From: "Weber Matthias" <weber@xxxxxxxxxxxxxxxxxxxx>
Date: Mon, 28 Feb 2005 17:16:57 +0100
Sender: netdev-bounce@xxxxxxxxxxx
Thread-index: AcUdsO0OF+qdfvzERdq/zulJHtwZdQ==
Thread-topic: filtering packtes before OS takes care about them
Hi,

i need a possibility to catch IP4 packets (from ethernet devices) before OS' 
netmodules (IP, UDP, TCP, ICMP, ARP, ROUTE, NETFILTER ...) takes care about 
them and 
* to delete them from input buffer such that OS' netmodules can't receive them
* to modify packet headers and move packets to interface related output buffers
* to keep them in input buffers such that OS' netmodules can take care about 
them.

I would be thankfull for any hint, link or code example.

Bye
Matthias

--

Dipl.-Inf. Matthias Weber
Universität Erlangen-Nürnberg
Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik 
Egerlandstraße 7-9
91058 Erlangen
Tel. :*49 9131/85-27702
Fax. :*49 9131/302528
www :www.faps.uni-erlangen.de
mailto:weber@xxxxxxxxxxxxxxxxxxxx



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