If you're using a broadband connection I'm sure your address is being probed several times a minute by mindless "script kiddies" running bootleg software that hunts for certain well-known backdoors, trojan horse virii, and other easy "ins" they can go back and rub their pimply little members around on if they find them. Unless the same IP is systematically probing several of your ports in a row and seems to be persistent I'd not worry overmuch about it. Bravo for having the firewall! Mark