[LARTC] FTP Connection Tracking in a Bridge

Linux Advanced Routing and Traffic Control

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On Wednesday 20 August 2003 10:48, Wayne wrote:
> Hello,
>
> I have a box running as a bridge and am trying to track the passive FTP
> sessions by marking them with iptables (CONNMARK option installed) and then
> trying to pick up the mark using tc filter fwmark. This is not working.
>
> I have checked the marking of the packets and this is working fine because
> I can see the marks when I cat /proc/net/ip_conntrack.
>
> Having setup my queues and using the following command:
>
> tc filter add dev eth1 parent 1:2 protocol ip prio 1 handle 2 fw classid
> 1:2a
>
> I do not get any traffic going in to this queue. I am running kernel
> 2.4.21.
>
> My question is whether the packet that I have marked is actually every
> getting to the tc filter. As I am running a bridge, does the packet get
> marked in iptables PREROUTING, and then go straight to the FORWARD rule and
> then out.
>
> What is the sequence in which iptables processes the packet and then the tc
> filter processes the packet.
>
> Many thanks
Just wondering, can you really use iptables on a bridge?  I thought you have 
to use ebtables : http://www.docum.org/stef.coene/qos/faq/cache/41.html

Stef

-- 

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 "Using Linux as bandwidth manager"
     http://www.docum.org/
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