said by david4toy:not necessarily. my comcast modem is 192.168.100.1 and my LAN network is 192.168.1.1 /24
They have me setup using a ubnt antenna using 192.168.100.1 and my router using 192.168.1.1 shouldn't the router be using 192.168.100.2?
that just means you wont be able to access the .100.1 device from the 1.1 network unless you have a router/switch that allows you to add custom routes. it shouldnt have anything to do with port forwarding. i am not an expert on ubnt equipment, but i would imagine that it is just a passthrough/bridge device.