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 From:  Lonnie Abelbeck <abelbeck at abelbeck dot com>
 To:  m0n0wall List <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Re: [m0n0wall] Setup for new firewall
 Date:  Sun, 29 Oct 2006 15:07:05 -0600

You might want to look at a filtered bridge configuration:


On Oct 29, 2006, at 1:28 PM, Jim Toro wrote:

> I'm new to firewalls so please dont kill me.I am fiddling around
> with m0n0wall and need to do this:
> PC's  --- SWITCH --- FIREWALL --- Router --- Internet
> All the PC's are going to the switch and the firewall will sit
> inbetween the switch and the router. We have two Class C networks
> All public addresses, no private stuff:
>   Lets say:   1.2.3.xxx  and 1.2.4.xxx
> and our router is configured to accept both on the same interface. So
> if any one on either network wants to go "out" they pick their
> network's gateway IP and put it in their settings.
> is one gateway
> is another gateway
> What I am not sure about is what m0n0 needs in order to deal with both
> on the LAN and WAN side.  Since each interface gets an IP and the  
> networks
> will have IP's on the pc/switch and router side of the firewall for  
> both
> networks (pc's on the lan side and the router on the wan side) I am  
> not
> sure what exactly to do.
> Would it be better to add a third NIC and split
> the network to two switches that take only their network IP's to the
> individual NICs on the firewall or is there a simpler way that I am
> not sure about.
> Thanks for any guidance you can give me.
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