We recommend ufw together with the graphic tool gufw for all users regardless if you are a Linux novices or an experienced Linux geek.privacynow.eu team
A properly configured firewall is a crucial part of establishing preliminary system security. Keeping this in mind, here we will go over how to configure the firewall on your Ubuntu PC.
Now, by default, Ubuntu comes with a dedicated firewall configuration tool known as UFW or Uncomplicated Firewall. It is an intuitive front-end system designed to help you manage iptables firewall rules. With UFW, you will be able to use almost all the necessary firewall tasks without having to learn iptables.
As such, for this read, we will be using UFW to help set up a firewall for our Ubuntu PC. We have also put together a detailed step-by-step tutorial on how to use UFW to perform.