To save our system from the outside world, we need a dedicated software platform called “Firewall”. In this article, we will discuss some best-known open-source firewalls based on Linux to protect networks and computers from cyber security threats. We need a well-configured Firewall, which is …
See the commands of the UFW firewall on Ubuntu Linux to list the open ports that are allowed or denied to be accessed from outside the network. UFW stands for uncomplicated firewall. The goal of UFW is to provide an uncomplicated command line-based frontend for …
Here in this article, we learned the simple steps and commands to install a graphical user interface (GUI) to manage FirewallD on either Alamlinux or Rocky Linux 8. However, the steps are the same for CentOS, Redhat, Oracle Linux, and other RPM-based distros. FirewallD is …
Firewalls are one of the most essential parts of security when we are going online. Here we learn the steps and command to install, configure, and how to use FirewallD on AlmaLinux 8 using CLI or GUI. Many of us who are not already Linux …
If after installing Debian 10 or 11 Bullseye you get an error in UFW firewall usage- “The command is not found” then you have to install it. And in this tutorial, we will learn that. UFW (uncomplicated firewall) is an interface to IPTables, which is …
This tutorial will guide you with commands that we can use to open or close popular web server ports that are HTTP port 80 and its secure version that is HTTPS port 443 on AlmaLinux 8 or Rocky Linux. FirewallD comes as the default firewall …
Many times after installing some application or accessing an inbuilt service outside the system using some other devices, we need to open a network port. It is a communication endpoint defined by a software layer to identify & access some particular process or a type …