If you feel that your antivirus is simply not enough to protect you from the various online threats, then your best bet is to try a firewall. Although simplewall is not a traditional firewall, it uses Windows' Filtering Platform to give you more control over how applications connect to the Internet.

The program has a simple interface and the best way to describe it is that it looks like a list where you can view all the apps with and without Internet access. You can change the highlighting colors from the settings, so you can make special items stand out.

In case you’re wondering why all active apps are not listed, that is because the app focuses only on those that actively make network requests. It doesn’t track just programs, and you can browse the small toolbar under the main menu to check out the services and UWP apps that also make requests.

In case you are curious how the program handles the packets after you updated the rules, you can check out the tab with the same name. The app logs all dropped packets, so you can view a detailed list of blocked connections in the tab or the log file.

The app includes a rule editor where you can configure both global and special rules, especially for those apps that you perhaps prefer don’t connect to the Internet at all.

You will appreciate that the app displays the blocklists along with the system and user rules, as it spares you the trouble to look for them in other locations.
simplewall can block Windows' telemetry and spying features. The Blacklist tab allows you to manage this. Here, you can find and block known processes that are related to telemetry, preventing Windows from sending data to Microsoft.