Do not do this on a live site if you do not know exactly what you are doing. Please note: Doing these actions bring the risk of downtime for your server if you are not careful. In this tutorial, we will show you how to use the UFW firewall with hands-on examples. It aims to provide an easy to use interface for people unfamiliar with firewall concepts, while at the same time simplifies complicated iptables commands to help an administrator who knows what he or she is doing. It is not as flexible as iptables but is vastly easier for basic operations. You can block ports, IPs or even entire subnets using UFW. It allows or blocks incoming and outgoing connections to and from the server. UFW is a great firewall tool that is designed to be run on hosts or servers. As a result, the UFW is well-suited for beginners, and you can learn, configure and use it easily.

However, it can be difficult for beginners to learn how to use it properly when configuring the firewall. Iptables is a great tool with many functionalities that can be used to secure your Linux system from unwanted traffic. Iptables is an extremely flexible firewall utility that was built for Linux operating systems. UFW or Uncomplicated Firewall is a command-line interface to iptables and is specially designed to simplify the process of configuring a firewall.

Show iptables