By default, UFW is not enabled and doesn’t affect your network. The above command would have shown you the firewall rules if the firewall was enabled. This should give you the following output at this stage: Status: inactive You can check the firewall rules by using the following command: sudo ufw status These rules consist of allowing and denying specific sources and destinations. UFW works by setting up rules for incoming and outgoing traffic. Note: You need to use sudo or be root to run (almost) all the ufw commands.

If it is installed, you should see the version details: :~$ ufw -version To check that UFW is properly installed, enter: ufw -version If not, you can install it using the following command: sudo apt install ufwįor other distributions, please use your package manager for installing UFW. If you are using Ubuntu, UFW should already be installed. There is a dedicated guide to Gufw if you want to use that. There is a GUI frontend called Gufw for desktop users but I won’t be covering it in this tutorial. Please note that I’ll be using the command line method here. This should be suitable for both Ubuntu server and desktop users. In this tutorial, I’ll go over configuring a firewall that suits your needs, giving you an overview of what can be done using this simple utility. Now you won’t be able to access the server via SSH.

For example, you block all incoming traffic on the server you are accessing via SSH. An incorrect setup may leave the server inaccessible if you are doing it for a remote Linux system, like a cloud or VPS server. It is important to properly set up firewalls. On desktops, it is up to you if you want to set it up. In short, the firewall is a must for servers. If you are one of those people who like to keep things under control on an advanced level even on the desktop, you may consider setting up a firewall. This is crucial for servers, but it also makes a regular user’s system much safer, giving you control. Why should you use a Firewall?Ī firewall is a way to regulate the incoming and outgoing traffic on your network. It is actually an interface for iptables, which is the classic low-level tool (and harder to get comfortable with) to set up rules for your network. UFW (Uncomplicated Firewall) is a simple-to-use firewall utility with plenty of options for all kinds of users.

Ufw bird