Firewall

Activating the Windows 7 firewall

A firewall protects your computer from Internet worms that exploit open ports and operating system vulnerabilities. Only one firewall should be active on a computer.

If the Windows Security Center reports that your firewall is off, turn it on following these steps:

1. Click Control Panel > System and Security > Windows Firewall.
2. In the left-hand column, click Turn Windows Firewall on or off.
3. Click Turn on Windows Firewall (in both network settings locations).
4. Click OK.
5. Close the Windows Firewall window.