I recently rolled a custom kernel after applying the bridge patch, and setup
an ethernet bridge on my network between the LAN and the router. So far, so
good. All the clients can get to the router and vice-versa, so I was ready
to begin implementing some firewall rules through iptables.

When I look through iptables, however, I'm confused by the output. It shows
a great deal of packets traversing the INPUT and OUTPUT chains, but none
crossing the FORWARD chain. Since the box itself isn't running any services,
I assumed that all of the packets being sent from our LAN out to the router
would traverse the FORWARD chain, and so I'd need to edit that through
iptables. 

1) Am I wrong about which chain the packets are traversing? Curiously, even
the total number of packets crossing the wire seems far lower in iptables
than when I query ifconfig.

2) If the FORWARD chain isn't showing any packets across it, is my bridge
improperly functioning? I suspect that the issue is with iptables rather
than the bridging portion of things, but I wan't to eliminate any variables.

Thanks for any help anyone can provide!

eol,

Reed Wiedower

reed wiedower
[EMAIL PROTECTED]
peyser.com
202.638.3730x115

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