Since the introduction of the first firewall built into the operating system (Internet Connection Firewall) of Windows XP, Microsoft has steadily improved the firewall in each subsequent incarnation of Windows. While the Windows Firewall included in the newest client OS, Windows 7 is more evolutionary than revolutionary, it does provide some nice tweaks to make it more user-friendly and at least one big change that makes a difference to mobile users. In this article, we will take a look at the Windows Firewall in Windows 7 and show you how to configure it with multiple active firewall policies.
Source : WindowsSecurity.Com