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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.

Last month, I kicked off a series of articles on transparent firewalls, beginning with a brief essay on why firewalls are still relevant in an age of Web applications and tunneled traffic. I also ...

Although Linux has a firewall built into the kernel itself, it isn’t always the easiest to use, especially for new users to Linux, even when there are several graphical utilities that can help you ...

Simone Margaritelli, the VP of Research at Zimperium, has created a Linux port of Little Snitch, a wildly popular macOS firewall application. Named OpenSnitch, the Linux port works on the same ...