In this video, I show how to open common ports, enable the firewall, delete rules, and reset the configuration. I also explain how UFW relates to Iptables, Nftables, and Netfilter.

I have a Fail2Ban video: https://video.charlesbeadle.tech/w/s52XrLU7m1xZiV8QUjjkjP

If you need to learn how to configure SSH, then you could check out my detailed blog post on that: https://charlesbeadle.tech/posts/ssh