An Application firewall is a firewall in charge of the calls of an application or service. Based on a preset configuration policy, it allows or blocks out communications from an application. If you’re ...

Jack Wallen walks you through the process of installing and using the Portmaster network monitor so you can better manage the security of your system on a per-app basis. Portmaster isn’t your average ...

Jack Wallen demonstrates how to open a port in Portmaster to allow secure shell traffic into a desktop computer. Portmaster isn’t just a cross-platform network monitor — it’s also a very powerful ...

Ever wanted to stop a specific app from going online—whether to protect your privacy or block suspicious activity? Me too—and that’s why I use Portmaster, a free, open-source network monitor that lets ...