How To Install UFW Firewall on Ubuntu 16.04 LTS

Install UFW Firewall on Ubuntu 16.04 LTS

In this tutorial, we will show you how to install UFW Firewall on Ubuntu 16.04 LTS. For those of you who didn’t know, The default firewall configuration tool for Ubuntu is ufw. Developed to ease iptables firewall setup, ufw provides a user-friendly way to produce an IPv4 or IPv6 host-based antivirus. By default UFW is disabled.

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 the step-by-step installation UFW Firewall on an Ubuntu 16.04 Xenial Xerus server.


  • A server running one of the following operating systems: Ubuntu 16.04 (Xenial Xerus).
  • It’s recommended that you use a fresh OS install to prevent any potential issues
  • A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install UFW Firewall on Ubuntu 16.04 LTS

Step 1. First, make sure that all your system packages are up-to-date by running the following apt-get commands in the terminal.

sudo apt-get update
sudo apt-get upgrade

Step 2. Installing UFW Firewall.

In Ubuntu 16.04, UFW is installed by default. If not, you can easily install it by running the following command:

apt-get install ufw

After installation, UFW is deactivated. If you configure your server via SSH, it is important to release SSH before you enable UFW:

ufw allow ssh

Step 3. UFW control.

Turn on:

ufw enable

Turn off:

ufw disable

Attention! The following are examples, please use them only if you know what you are doing!

Allow protocol:

ufw allow ssh

Allow port:

ufw allow 22

Allow Port Ranges:

ufw allow 1000:2000

Prohibit connections:

Deny protocol:

ufw deny ssh

Deny port:

ufw deny 22

For more usage commands you can use the –help flag:

ufw --help

Congratulations! You have successfully installed UFW. Thanks for using this tutorial for installing UFW Firewall on your Ubuntu 16.04 system. For additional help or useful information, we recommend you check the official UFW Firewall website.

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r00t is a seasoned Linux system administrator with a wealth of experience in the field. Known for his contributions to, r00t has authored numerous tutorials and guides, helping users navigate the complexities of Linux systems. His expertise spans across various Linux distributions, including Ubuntu, CentOS, and Debian. r00t's work is characterized by his ability to simplify complex concepts, making Linux more accessible to users of all skill levels. His dedication to the Linux community and his commitment to sharing knowledge makes him a respected figure in the field.
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