The Windows Firewall acts like a debate between your computer and the rest of the Internet earth, keeping unwanted network traffic from coming in, and keeping apps on your computer from communicating with the outside world. But every contend needs a gate, and that'southward where exceptions come in.

When you allow an app to communicate through the firewall, information technology's called calculation an "exception". For the most part, this all happens automatically. Windows creates exceptions for its own arrangement services and apps, and when yous install a new app that wants to communicate with the outside world, Windows will inquire y'all if information technology's allowed to do so.

Sometimes, though, you might want to create an exception manually to permit an app to communicate with the Cyberspace. Perhaps it's a app you originally said no to when Windows asked, but now you've changed your mind. Or maybe information technology'due south an app that just didn't get configured automatically for some reason. In those cases, you'll demand to head into Windows' firewall settings.

How to Add an Exception Manually

Starting time the Windows Firewall settings by clicking Get-go and searching for Firewall. Click the Windows Firewall app and non Windows Firewall with Advanced Security. Nosotros'll talk about that one a fleck later.

Firewall Start

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 yous connect to on your laptop out in the world). On the list of settings to the left, click "Allow an app or feature through Windows Firewall".

Firewall main

The adjacent view shows you lot a list of all the apps that are already allowed to communicate, and over what kinds of networks (individual or public). If information technology's the beginning time you've opened Windows Firewall, click the Change Settings button to requite yourself permissions to brand changes or add new apps. You'll only need to do this once. To add together a new app to the listing, click "Let some other app".

view apps

In the Add an app window, browse for the app you desire to allow network admission to. Click the Network types push button to specify whether you want to allow the app access on public or private networks (or both). Click Add when you're washed and that'southward it. You've allowed the app through your firewall–you lot'll meet information technology show up on the list of allowed apps, and information technology should be allowed to use internet or network-related features.

pick app

How to Configure Avant-garde Firewall Rules

Windows actually provides you lot with ii different interfaces for working with the firewall. The basic Settings interface nosotros only looked at is by far the simplest manner just to allow an app to communicate. Some other tool, Windows Firewall with Advanced Security, has a lot more options. You tin can utilise it do things like:

  • Create rules governing inbound and outbound traffic for not just apps, just too network traffic coming in over a specific port. A good use of this might exist directing incoming traffic that uses a particular port number to a selected app.
  • Direct network traffic to item computers on your local network based on the app or port numbers.
  • Create connection security rules that force other computers attempting to communicate with yours to use dissimilar types of hallmark protocols to establish their identity.
  • Monitor the use of rules and other security associations.

It's unlikely that you lot'll ever need any of the features offered by Windows Firewall with Advanced Security except in special circumstances. Perhaps you use ane of your computers to share your Internet connection and serve equally the main firewall for your network. Still, it's helpful to know the options are there if y'all need them, even information technology's only for knowing why two dissimilar Windows Firewall apps appear when you search for them.

Also keep in mind that about homes and businesses take a defended hardware firewall built into their router, making it even less likely you'll demand these types of features on your Windows computer. If you exercise need to fix rules for directing traffic, you'll probably do it on the router itself.