Hi.

I have m0n0wall running on a Soekris net4501 system with 3 network 
interfaces.
The first network is the LAN, the second one is the WAN and the third 
one is another network (OPT1) which the LAN clients needs to connect to.
I can reach the WAN from the LAN, but I can't reach any host on the OPT1 
from any LAN client.

The OPT1 has 172.18.67.252/24 as IP address, and I can ping an host (for 
example 172.18.67.254) from the m0n0wall web interface.
 From a LAN client which is using m0n0wall as default gateway I can ping 
the OPT1 IP address (172.18.67.252) but I can't ping the 172.18.67.254 host.
No log is shown on the m0n0wall firewall logs.

Could you help me to found the problem?

Thank you very much!
Goodbye
Mattia.