I don't think BitDefender has a firewall. I typed in "Firewall" under search and nothing came up. I was running the free version. Whare's that little doggie when you need him? He's running the Pro version of BD, maybe he can tell us if it has a firewall. Auuuuuuuuugggggggggiiieeeeee...! Here boy, here boy, heeerrrre boy...