Firewalls: How to setup a basic firewall using UFW, iptables, nftables, or firewalld

This article will be covering how to setup a basic firewall using each of the four main methods of doing so. I’ll leave covering advanced stuff to James, as he’s been somewhat obsessed with learning the complicated aspects of firewalls recently, but the basic are also important. UFW I’ll start with the simplest one. UFW
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