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 From:  "Justin Albstmeijer" <justin at VLAMea dot nl>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] bridge+filter, without NAT problem
 Date:  Mon, 31 May 2004 14:02:29 +0200 (CEST)
I found that all works fine if I set the WAN interface to DHCP (not
getting an answer on it's requests) or setting it to an static ip in the
same subnet as the server behind OPT1.

DHCP seem to be the best option, but what if it would get an reply of a
badly configured DHCP server?

Setting the interface with a static ip does not work either.

> Using m0n0wall-1.0 on a net4501.
> Problems:
> - In bridge mode with filtering off, it works like expected, but when I
> enable filtering bridge most of the times I can't get traffic from OPT1 to
> the outside (WAN) network. Incomming traffic works fine (WAN->OPT1).
> (sometimes it works, stops working after a reboot)
> - Also sometimes the LAN interface cannot be reached, after rebooting or
> re-assigning the ip through the serial interface makes it work again.
> - m0n0wall works fine in every configuration for me except in the filtered
> bridge mode.
> Config:
> -Made a bridge from OPT1+WAN.
> -Enabled filtering bridge
> -LAN has still
> -Firewall rules, both OPT1 and WAN have PASS, protocol all, source any,
> destination any.
> -Enabled advanced outbound NAT (to prevent auto natting)
> Questions:
> - Any idea what the problem could be?
> - Why does the WAN interface want an ip? what should I fill in?
> - In the OPT1 network there is also some commnucation between de servers
> with private network ip ranges, could this cause problems?
> - Is there a difference between an OPT1-LAN or an OPT1-WAN bridge?
> Thnx.
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