Learn how to turn the Windows Firewall on or off using the Windows Security app.

What is a Firewall? Data flows into and out of devices through what we call ports. A firewall is what controls what is - and more importantly isn't - allowed to pass through those ports. You can think of it …

Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.

Learn about the risks of allowing apps through Windows Firewall, and how to add or remove apps from the list of allowed apps.

For more information about Windows Firewall, go to Windows Firewall. Microsoft offers Microsoft Security Essentials, a free security program that will help protect your computer from malware.

You receive a warning in the notification area of the task bar telling you that the Windows Firewall is turned off. The warning is displayed as a Windows security alert in Windows XP and in Windows …

You can now make changes to your Windows Firewall settings. Note: If the Change settings button is still greyed out, your administrator may have disabled the option for you to change the settings.

Firewall and network protection - You can specify if you want to receive notifications when Windows Firewall blocks a new app. You can also configure these notifications differently depending on if the …

Firewall & network protection: View and manage the status of Windows Firewall. You can turn the firewall on or off, and access advanced settings for different network types

Caution: When you remove your currently installed Internet security programs, your PC is in an unprotected state. If you haven't installed another antimalware program make sure that Microsoft …