Re: iptables post/pre rountig problem

Linux Advanced Routing and Traffic Control

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Hi Robert,

Robert Penz wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hi!
> 
> I'm trying to exclude some ip ranges from my traffic filter, for that I mark 
> the packets in PRE-/POST-ROUTING.
> 
> If I mark them straight ahead it works, but if I want to do that in a user 
> chain I get the message that userchain.so can't beloaded.
> 
> iptables -N capped_in
> iptables -N capped_out
> 
> # put all incoming traffic to IMQ
> iptables -t mangle -A PREROUTING -i eth0 -j IMQ
> # mark all packets which need to be capped
> iptables -t mangle -A PREROUTING -i eth0 -d xxx.xxx.xxx.141 -s ! 
> xxx.xxx.xxx.0/24 -j capped_in
>        iptables -A capped_in -s yyy.yyy.yyy.0/27 -j RETURN
>        iptables -A capped_in -j MARK --set-mark 2
> 
> # now the outgoing traffic
> iptables -t mangle -A POSTROUTING -o eth0 -s xxx.xxx.xxx.141 -d ! 
> xxx.xxx.xxx.0/24 -j capped_out
>        iptables -A capped_out -s yyy.yyy.yyy.0/27 -j RETURN
>        iptables -A capped_out -j MARK --set-mark 1
> 
> Can anyone tell me how I can achieve? thx


Did you try -t mangle -A capped_in/out ?
Your chains were created in the mangle table, so they can only be called 
from within mangle.

Bye,

Patrick



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