Applies to Windows Vista

See also

Turn Windows Firewall on or off

If your computer is connected to a network, network policy settings might prevent you from completing these steps.

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To turn on Windows Firewall

  1. Open Windows Firewall by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Security, and then clicking Windows Firewall.

  2. Click Turn Windows Firewall on or off. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. Click On (recommended), and then click OK.

If you want the firewall to block everything, including the programs selected on the Exceptions tab, select the Block all incoming connections check box.

To turn off Windows Firewall

You should not turn off Windows Firewall unless you have another firewall enabled. Turning off Windows Firewall might make your computer (and your network, if you have one) more vulnerable to damage from worms or hackers.

  1. Open Windows Firewall by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Security, and then clicking Windows Firewall.

  2. Click Turn Windows Firewall on or off. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. Click Off (not recommended), and then click OK.