Get rid of NORTON !!!! It is junk, garbage, crap, ûûûûe, trash, no good, pos, bad, not nice, terrible, etc, etc, etc. When I think of some more nice things to say about it I will let you know.
My opinion is the best anytivirus is no antivirus, and the best firewall is to unplug your ethernet or phone cord. But if you insist on using one: McAfee Enterprise is a very good antivirus, and look & stop is a very good firewall. Usually when I do use the free firewalls, I go after Zone Alarm. Mcafee and Look & stop are charged.