Windows 7 built-in firewall is able to prevent computer virus from attacking computer effectively. In addition, operations are simple, too. After opening "Control Panel" of Windows 7 and clicking "Windows Firewall", we can see the following interface:
interface, select "Customize Settings" to enter the next
settings aiming at 2 types of network environment. This first one is
"Home or work (private) network location settings", and the
other is "Public network location settings". Then, click
If we are
unsatisfied with former settings, we can select "Restore
defaults" to restore factory settings.
At last, we need
to select "Advanced Settings" to make settings aiming at
different network environment, like import policy, export policy, and restore
default policy. After these operations, Windows Firewall is opened successfully.