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Method 1 of 3:
Turning on Windows Firewall in Windows 7, 8.1, and 10
- Open Start. Click on "Search". Type "firewall" into the search box. Select "Windows Firewall" from the result list.
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Images 1 of How to Turn On Windows Firewall Select "Turn Windows Firewall on or off" in the left pane. Enter your administrator password if you are prompted for one. -
Images 2 of How to Turn On Windows Firewall Click "Turn on Windows Firewall" in the network locations you wish to protect. Click "OK" to confirm the change.- You can also select the "Block all incoming connections, including those in the list of allowed programs" check box if you want Firewall to block all programs.
Images 3 of How to Turn On Windows Firewall
- You can also select the "Block all incoming connections, including those in the list of allowed programs" check box if you want Firewall to block all programs.
Method 2 of 3:
Turning on Windows Firewall in Windows Vista
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Images 4 of How to Turn On Windows Firewall Open the Start menu and select "Control Panel." -
Images 5 of How to Turn On Windows Firewall Select "Security" and then click on "Windows Firewall." -
Images 6 of How to Turn On Windows Firewall Click "Turn Windows Firewall on or off." You may be prompted to enter an administrator password. -
Images 7 of How to Turn On Windows Firewall Select "On (recommended)," then click "OK" to confirm the change.- Select the "Block all incoming connections" check box to have Firewall block all programs, even those on the "Exceptions" tab.
Images 8 of How to Turn On Windows Firewall
- Select the "Block all incoming connections" check box to have Firewall block all programs, even those on the "Exceptions" tab.
Method 3 of 3:
Turning on Windows Firewall in Windows XP
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Images 9 of How to Turn On Windows Firewall Open the Start menu. -
Images 10 of How to Turn On Windows Firewall Click on "Run" and type in "Firewall.cpl" in the box. Click "OK." -
Images 11 of How to Turn On Windows Firewall Select "On (recommended)" in the "General" tab. Click "OK."- In some cases, the "On (recommended)" option might be grayed out. It may be because a third-party firewall is already in use on the system. Turn off the third-party firewall to activate Windows Firewall. Make sure to consult with your system administrator before hand, if you have one.
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