How to manage your Linux firewall the easy way - without touching the terminal

You can select a default zone from the list and even set the default zone. Out of the box, the default zone is FedoraWorkstation, which rejects unsolicited incoming packets from ports 1 to 1024 ...
ZDNet

Yes, you need a firewall on Linux - here's why and which to use

Linux is highly secure, but you should still have a firewall. You should know if your ISP's hardware (gateway) uses a firewall. One of the easiest Linux firewalls is UFW and its GUI sidekick, GUFW.
Bleeping Computer

OpenSnitch Is a Host-Based Firewall for Linux Desktops

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 ...
InfoWorld

Linux firewalls

WHEN LOOKING for an effective, inexpensive firewall solution, Linux firewalls do not often enter into the picture unless someone involved in the security planning process is a Linux guru. With the ...
eWeek

Sun Fires Up Linux-Based Security Tool

eWEEK content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More. Sun Microsystems Inc. on Monday will announce a new ...