Personal Firewalls

Windows Firewall and Trend Micro's PC-cillin Firewall technology has moved both upward into the large enterprise and service-provider space as well as all the way down to the desktop level. Desktop firewalls, also known as personal firewalls, are designed to protect a single system. These firewalls have been around for a long time in the Linux and BSD space but only relatively recently have they made a significant entrance into the Windows desktop. Many computer vendors now bundle a personal firewall with a trial license on every system they sell. In addition, Microsoft now offers a personal firewall, Windows Firewall, enabled by default with every version of Windows XP with Service Pack two (SP2). (Prior to Windows XP SP2 it was known as Windows Internet Connection Firewall [ICF].)