Learn how to whitelist, allow, unblock or block a Program or App in the built-in Windows Firewall. You can blacklist or whitelist apps individually or block a program like Photoshop too from ...

How to manage the built-in firewall on Windows 11 On Windows 11, the Microsoft Defender Firewall comes enabled by default, and you can turn it off or on as needed, allow or block apps, customize ...

Learn how to open a port, block or close a port, in Windows Firewall in Windows 11/10. To configure the same, you will have to open Advanced Settings.

Windows Security can alert you if the firewall is blocking an app, but there are other signs to look for if it doesn't. You can check if the firewall is blocking an app on the Allowed Apps screen ...

Block PowerShell from internet access You can use Windows Firewall to block applications accessing resources. As noted in this SANS forum post, you can block PowerShell from accessing the internet.

You need to only make a few additions to the Windows hosts file. Open Windows Explorer and go to C:WindowsSystem32driversetc. Double-click on hosts and choose Notepad from a list of programs. Place ...