Workshop: Lock down your Linux system with Firewalld and OpenSnitch


OpenSnitch may not be a complete clone of Little Snitch – it misses a lot of nice details, like placing connections over an eye-catching geographic map, but it does its job faithfully.

Setting up Firewalld and OpenSnitch for controlling incoming and outgoing connections is an uncomplicated task compared to the task of configuring old-school firewalls. Both applications have well-designed graphical front-ends and let you escape the command line completely if you prefer to point and click.


  1. Official Firewalld website:
  2. OpenSnitch GitHub page:

The Author

Alexander Tolstoy is a long-term Linux enthusiast and a tech journalist. He never stops exploring hot new open source picks and loves writing reviews, tutorials, and various tips and tricks. Sometimes he faces a bitter truth delivered by the inhuman fortune | cowsay command that he once thoughtlessly put in ~/.bashrc

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