OK.i have test a lot of Viruses that can bypass Firewalls and Norton does nothing!!!!!if you pack a virus with a non freeware exe packer norton will not find it so you can easilly bypass firewall with some backdoor viruses!!!!only mcafee 7 finds everything!!!the new version of ZoneAlarm is Good(but slow).Kerio Firewall is Perfect(if you configure it correctly)!!!!