Every computer user needs security software to keep him or her safe on the Web. Along with antispyware and antivirus programs, a good software firewall is a must-have to keep hackers away from your data. Firewalls also are useful for determining which programs are making contact with outside sources. If you're looking for a solid software firewall, look no further than ZoneAlarm .
For a quick rundown of how the ZoneAlarm firewall protects your computer, check out this First Look with CNET Download.com's Jason Parker.