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Firewalld is a powerful tool for firewall management on Linux systems, especially on AlmaLinux and Rocky Linux, two distributions widely adopted as alternatives to CentOS. In this article, we’ll explain how to install, configure and manage Firewalld on AlmaLinux and Rocky Linux, ensuring security and traffic control for your server. Definition Firewalld is a dynamic
If you’re looking for a way to protect your Ubuntu or Debian server, UFW (Uncomplicated Firewall) is an excellent choice. UFW is a tool that makes setting up a firewall simple and effective, ideal for both novice users and those looking for a quick solution for managing their firewall rules. In this article, we’ll explain
Cyber security is a constant concern for system administrators and IT professionals. Recently, a new vulnerability, called “OpenSSH RegreSSHion”, was discovered, causing concern in the security community. In this article, we’ll explore this vulnerability, how it works, its impact and, most importantly, how to fix the problem. What is the OpenSSH RegreSSHion Vulnerability? OpenSSH is
Proxy ARP is a technique used to allow one machine to respond to ARP (Address Resolution Protocol) requests on behalf of another machine. This is useful in various situations, such as when you need to interconnect two subnets without routers or when you want to implement a high availability solution. In Linux, you can configure
