In this tutorial we will show you how to install UFW Firewall on Ubuntu 20.04 LTS. For those of you who didn’t know, UFW is an acronym for an uncomplicated firewall. Securing a network with an uncomplicated firewall is super easy and highly recommended.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation UFW Firewall on an Ubuntu 20.04 (Focal Fossa) server.
Setup UFW Firewall on Ubuntu 20.04 LTS Focal Fossa
Step 1. First make sure that all your system packages are up-to-date by running these following apt commands in the terminal.
UFW is part of the standard Ubuntu 20.04 installation and should be present on your system. If for some reason it is not installed, you can install using following command:
Check the current firewall status:
Attention! The following are examples, please use only if you know what you are doing!
Allow Port Ranges:
You can list all application profiles available on your server by typing:
The output will look similar to the following:
To find more information about a specific profile and included rules, use the following command:
For more usage commands you can use the –help flag:
To control the UFW firewall via GUI interface you will need to install the gufw package:
Once installed, start Gufw by searching your start menu:
Congratulation’s! You have successfully install and setup UFW. Thanks for using this tutorial for installing UFW Firewall on your Ubuntu 20.04 LTS Focal Fossa system. For additional help or useful information, we recommend you to check the official UFW Firewall website.