In today's open source roundup: Six GUI firewall management applications in Linux. Plus: Linux Lite 2.2 released, and the story of how Kali Linux was created The command line is a powerful tool for ...

Dear readers, I appear to have set a Paranoid Penguin record—six months spent on one article series. (It has consisted of five installments, with a one-month break between the second and third pieces.

Firewalls. Surely, you've heard and read about them. You know the general idea of what they are, but can you set one up? Can you evade one? Hopefully after this, you can say yes. Any machine worth ...