[LARTC] Problem with iptables with -j TOS and MARK

[LARTC] Problem with iptables with -j TOS and MARK

[makevuy]

Hy,

I would want to mark the packets that are entering in a machine, with a 
mark for using diffserv with DSMARK.

My machine has 2 interfaces, a ethernet and a wireless. The ethernet 
interface is eth1 and the other is wifi0.

Firs, I would want to test that I would be able to mark the tos of the 
paquets that I would be receiving, for this I write in the console of my 
linux:


iptables -A PREROUTING -i eth1 -t mangle -p udp -j TOS --set-tos 0x20

But the TOS doesn't change (I see this with ethereal)

Waht could be the problem?

I've tried the same with the MARK option:

iptables -A PREROUTING -i eth1 -t mangle -p udp -j MARK --set-mark 0x20

and a DSMARK.

Regards.

-- 
Sandra Salmerón Ntutumu    <makevuy@ehas.org>
Tlf. Analog: +34 914888405 / Móvil: 653574298
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Fundación EHAS: Enlace Hispanoamericano de Salud - www.ehas.org
Telemedicina rural para zonas aisladas de países en desarrollo


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