Firewall/NAT

Hiya,

I'm currently running version 1.3b16 of m0n0wall on a PC Engines ALIX.2D3.
Due to a lack of a switch, I'm trying to bridge OPT1 to LAN. In the OPT1 interface options I have selected the bridge option and the LAN interface.
After applying changes, I am able to retrieve an IP address from the DHCP server running on the m0n0wall box and I can contact the hosts on the internal network.
However, I am not able to connect to either m0n0wall or any external addresses using the host connected on the OPT1 interface. When I check the firewall logs, I can see the following error messages (interestingly, it says the interface is WAN);

   17:01:47.813162   WAN   192.168.1.197   208.67.222.222, type echo/0   ICMP
   16:55:36.510805   WAN   192.168.1.197, port 58143   192.168.1.1, port 53   UDP
   16:55:36.807151   WAN   192.168.1.197, port 61411   192.168.1.1, port 53   UDP
   16:55:37.524570   WAN   192.168.1.197, port 58143   192.168.1.1, port 53   UDP
   16:55:37.820933   WAN   192.168.1.197, port 61411   192.168.1.1, port 53   UDP
   
Now given, that the interface is bridged, my conceptual understanding is that LAN and OPT1 should be seen and treated as the same network segment. So I can't understand why this doesn't work! I have tried re-assigning the ports on the firewall to see if that helps, which it did not. Is anyone able to provide me with any guidance on this? Am I just misunderstanding what m0n0wall can do? :S

Thanks in advance

That sounds like you just need to add a Firewall rule under OPT1 tab to allow traffic.