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Direct network traffic to particular computers on your local network based on the app or port numbers.A good use of this might be directing incoming traffic that uses a particular port number to a selected app. Create rules governing inbound and outbound traffic for not just apps, but also network traffic coming in over a specific port.Another tool, Windows Firewall with Advanced Security, has a lot more options. The basic Settings interface we just looked at is by far the simplest way just to allow an app to communicate. Windows actually provides you with two different interfaces for working with the firewall.

You’ve allowed the app through your firewall–you’ll see it show up on the list of allowed apps, and it should be allowed to use internet or network-related features. Click the Network types button to specify whether you want to allow the app access on public or private networks (or both). Click Add when you’re done and that’s it. In the Add an app window, browse for the app you want to allow network access to. To add a new app to the list, click “Allow another app”. If it’s the first time you’ve opened Windows Firewall, click the Change Settings button to give yourself permissions to make changes or add new apps.

The next view shows you a list of all the apps that are already allowed to communicate, and over what kinds of networks (private or public).

On the list of settings to the left, click “Allow an app or feature through Windows Firewall”. The Windows Firewall screen shows you how the firewall is configured for both private networks (such as your home or work) and public networks (the ones you connect to on your laptop out in the world).