Microsoft already packs Windows with a firewall and even antivirus, but there are also alternative and completely free firewall programs you can install. Many of them have features and options ...

Most of the time, you shouldn't have to think about how to use the Windows firewall, but if you do need to change some ...

They also customize other firewall settings. Readjustment by the user is not necessary. Teamviewer and other applications that react to signals from outside set the Windows firewall accordingly ...