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 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 ...

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 ...

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 ...