Firewall is an important and necessary tool to protect us from the unsecure Internet. Most of the modern OSes come with a built-in firewall, but the problem is that few people know of its existence and only a few know how to configure it.
Windows is no different. By default, it comes with a decent built-in firewall which is capable of controlling all the incoming and outgoing traffic. This built-in Windows firewall is a bit clunky with a not-so-friendly user interface and complex rules, though it does gives you plenty of control on overall rules like blocking, restricting, whitelisting, etc. In this article, we are going to show you how to create advanced firewall rules in Windows firewall to block an application from accessing the Internet.
Full article here:
How to Create Advanced Firewall Rules Using Windows Firewall (Make Tech Easier)