How to Install a Firewall in your Ubuntu

By default, Ubuntu comes with a firewall configuration tool called UFW (Uncomplicated Firewall) UFW is a user-friendly front-end for managing iptables firewall rules. It’s designed to make managing the iptables firewall easier or as the name says uncomplicated.

If UFW is not installed on your system, you can install the package by typing:

$ sudo apt install ufw

To verify if the package installed successfully, type:

$ sudo ufw status verbose

UFW is disabled by default. If you never activated UFW before, the output will look like this:

Status: inactive

And when UFW is activated the output will look similar to the following:

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