Allow or Prevent App Communication Through a Firewall

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As a security measure, all PCs use firewalls to protect your computer from receiving unwanted network traffic and to keep your apps from relaying information to the outside world. While this is a very necessary precaution, in some cases, you may want to allow your apps to communicate beyond the firewall. In this case, you will need to add an exception to your system.

In this article, you will learn how to add an exception to your firewall settings, which will allow your apps to communicate through a firewall. You can configure these options via the Firewall settings.

Prevent Apps from Communicating Through a Firewall

Click the Control Panel, or press the Windows key + X > Control Panel.


Next, go to Windows Firewall > Allow an app or feature through Windows Firewall:


A list of applications currently allowed through the Windows Firewall will be displayed.


To prevent an app from accessing the internet, click Change Settings and uncheck the Public or Private boxes next to the app. Alternatively, you can simply remove the app from the list by selecting the app and clicking Remove:


Allow Apps to CommunicateThrough a Firewall

To add an new application to the list, click Allow another app and then browse for the application. Click Add to enable communication:
Jean-François Pillou

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