open firewall port UDP Port 54925

I'm running Firestarter as a firewall on my Ubuntu 9.04, 9.10, and 10.04 releases but have done little to nothing beyond running the basic Wizard on install. I'm attempting to trouble shoot why my MFC5840 CN 'AIO' scanner isn't working and the Brother site says that port 54825 needs to be open. How do I tell if it is open and if not how to open it?
Thanx %:)SW