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 ...
TechRepublic

10 ways to check ports in Linux to help troubleshoot systems

10 ways to check ports in Linux to help troubleshoot systems Your email has been sent System and network troubleshooting often involves checking and obtaining information about ports to ensure ...
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.
TechRepublic

How to install the OPNsense Firewall/Router distribution

Need a dedicated firewall appliance? OPNsense is a free, open-source solution, ready to protect your network from intrusion. The protection of your network is one of the most important jobs in the ...