Like I said, Im not at my house yet, but just off of memory, I believe that i just entered that listening port into that box, making sure to associate it with my IP. In the applications tab, I believe you are able to enter in a port range. Im not sure, but are you able to enter a port range in there? For instance, put port 54885-55885. Try that. But Im quite sure in the applications tab, you can enter a port range