I'm trying to put our wireless access point into our firewall using one of the spare interfaces so I can allow only a handful of required services through using the WiFi, rather than - as present - having it within our LAN range, with unadulterated access to everything.
I've managed to configure this absolutely fine, however I have a problem when I'm trying to access a machine within the LAN whose own default gateway is another router rather than the Watchguard.
For example, I set up an allow rule to allow only Terminal Services traffic over the interface used for the wireless. I can use the remote desktop client to access my own PC (my PC's default gateway is the Watchguard which has issued it a DHCP IP address), but not our terminal servers. The terminal servers can be accessed from my own PC directly as they are in the same IP range, and the same physical network.
Also, when the wireless access point is within the same LAN as the servers, it works fine. I don't think it's specifically a wireless or firewall issue but all help greatly appreciated!