Discover How To Secure My Firewall HOWTOs
Using Firewall With UFW in Ubuntu Linux [Beginner’s Guide]
UFW (Uncomplicated Firewall) is a simple-to-use firewall utility with plenty of options for all kinds of users. 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.
A firewall is a way to regulate the incoming and outgoing traffic on your network. This is crucial for servers, but it also makes a regular user’s system much safer, giving you control. 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.
In short, the firewall is a must for servers. On desktops, it is up to you if you want to set it up.