Norton Personal Firewall

Norton Personal Firewall keeps personal data in and hackers out. It makes your PC invisible on the internet so that hackers can’t find it. The program’s intelligent intrusion prevention technology blocks suspicious internet traffic. And easy-to-use privacy controls prevent personal information from being sent out without your knowledge.

ZoneAlarm

ZoneAlarm is a basic firewall that will hide your computer on the internet protecting you from hackers. ZoneAlarm is free for personal use.

ZoneAlarm Pro

ZoneAlarm Pro PC firewall hides your computer on the internet protecting you from hackers, viruses, worms, and other internet threats.