That is allowing, denying, rejecting and limiting traffic. You need to understand the concepts UFW is based on. This will be the bulk of your firewall configuration: networking rules. We already covered the Home tab (that’s the quick guide you see when you start the app). Rulesīack to the main menu, somewhere in the middle of the screen you can select different tabs ( Home, Rules, Report, Logs). Next, I’ll go into setting up different rules. Note: You can’t rename/remove the currently selected profile. Pressing the – button will delete the highlighted profile. Note: The newly added profile will Deny Incoming and Allow Outgoing traffic.Ĭlicking a profile highlight that profile. You’ll also have to scroll down the list to see the profile you created (using the mouse wheel or the scroll bar on the right side of the list). To add a new profile, click on the + under the list of profiles. Pressing Enter will complete this process and pressing Esc will cancel the rename. Double-clicking on a profile will allow you to rename it. In the section under Profiles is where we can add, delete and rename profiles. The options under Gufw are quite self-explanatory. Logging means exactly what you would think: how much information does the firewall write down in the log files. Profiles can easily be added, deleted and renamed from the Preferences menu. Note that the policies can only be changed while the firewall is active (Status: ON). Changing the behavior of a policy ( Incoming/Outgoing) will apply the changes to the selected profile. Configuring firewall rules and policies Īll profiles use the same rules, only the policies the rules build upon will differ. So if you are travelling, set the firewall on public profile and the from here forwards, firewall will be set in public mode on each reboot. You’ll have to manually change the profiles if you change the network. If you are an average desktop user, you can stick with the default profiles. Open Software Center and search for gufw and click on the search result. That’s it! If you prefer not touching the terminal, you can install it from the Software Center as well. Now you can install GUFW with this command: sudo apt install gufw -y To do that, open up a terminal (default hotkey : CTRL+ALT+T) and enter: sudo add-apt-repository universe If you are using Ubuntu, make sure you have the Universe Repository enabled. I advise using your distribution’s package manager for installing GUFW. GUFW is available in all major Linux distributions. Installing GUFW on Ubuntu and other Linux In this guide, I’ll go over configuring a firewall using GUFW that suits your needs, going over the different modes and rules.īut first, let’s see how to install GUFW. GUFW is a graphical utility for managing Uncomplicated Firewall ( UFW). Now that you know you should be using a firewall on your system, let’s see how you can easily install and configure a firewall on Ubuntu or any other Linux distribution. In other words, you probably have a security layer when you are on your home network. On top of that, your actual system is hidden behind NAT. Some routers already have built-in firewall. A well-configured firewall is crucial for the security of servers.īut what about normal, desktop users? Do you need a firewall on your Linux system? Most likely you are connected to internet via a router linked to your internet service provider (ISP). A firewall is a way to regulate the incoming and outgoing traffic on your network.
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