I can't use ufw on Ubuntu 20.04: "command not found"

Question

Somehow, I can't use sudo ufw. The terminal keeps saying:

command not found

Solution

Is it even installed on your system?

You can install UFW with

sudo apt install ufw

You can get help with UFw with

ufw --help

You can download UFW directly from the ubuntu software center:

But, above all else, you can set paramenters for UFW using the GUI by installing Firewall Configuration tool from the ubuntu software center.

reference