Try this: ext_if = "dc0" # External Interface int_if = "dc1" # Internal Interface
IntNet = "192.168.1.0/24" # Internal Network Put spaces between the equal signs just in case. Leave the brackets out around the interfaces. Use $ext_if, $int_if, and $IntNet for filter rules, but try not using them on nat rules like this: nat on dc0 from 192.168.1.0/24 to any -> dc0
