Hello,
The bridge we use is the kernel patch provided by http://bridge.sourceforge.net
On the card side, we use Ethernet over ATM bridging (RFC 1483/2684 kernel module). It emulates an "Ethernet like" device : nas0.
The pppOE daemon sits in the VM where it reads and writes ppp frames on a virtual eth device created with TAP (http://Vtun.sourceforge.net).
The official address is carried by this virtual eth device.
The bridge forwards pppOE packets between the nas0 and the tap0 devices.
The goal is to use a bridged firewall. That means : a FireWall which is not visible from the external network.
The problem is to be able to filter the pppOE packets that flow across the bridge.
-- Francis GASCHET / NUMLOG http://www.numlog.fr Tel.: +33 (0) 130 791 616 Fax.: +33 (0) 130 819 286
Thanks for any help.
SBlaze wrote:
You should be able to filter at the "eth0" level of your diagram...
I kinda need more information on your "BRIDGE" before I could suggest something else.. If by bridge you mean it bridges the DSL modem and the LAN...then your eth0 is in the same machine you are calling a bridge?
In that case you should theoretically filter the eth0 device
--- Francis GASCHET <fg@xxxxxxxxx> wrote:
Hi list,
Is there somebody who knows a possibility to apply netfilter rules to ppp packets ?
Configuration :
DSL - PCI modem card - BRIDGE - eth0 (in a virtual machine)
I would like to filter the traffic which flows across the bridge, but at this level, the IP traffic is encapsulated...
Any clue ?
Ciao.
