Windows 7 and Vista have built-in firewalls. This can help raise the level of security for your computer when it is connected to the Internet.
- Select Start | Control Panel. Once you are inside the Control Panel, click on Windows Firewall (change to view by icons in Windows 7 to display all control panel options.
- The Windows Firewall status window display. The Windows firewall can be turned on or off and customized using the links on the left navigation pane of the window.