After searching through the ZoneAlarm user forum I understand that if your computer is hooked up to a router with NAT, the router (ie., hardware firewall) does the job of blocking incoming traffic. As a result the Overview -> Status page will display "0 Intrusions have been blocked since install" because the router is blocking incoming traffic before it even reaches ZASS.
However, even though my PC is behind a router and blocks incoming traffic the Overview -> Status page displays "2 Intrusions have been blocked since install". And it's been at 2 for several days. How did these 2 "intrusions" make it passed the router???
Operating System:Windows XP Home Edition
Product Name:ZoneAlarm Internet Security Suite