Managing firewall rules is a crucial security task on Linux systems. In Debian 13, depending on the server configuration, different firewall tools can be installed. The most common are UFW, iptables, or firewalld. You must first check if your firewall is active and what rules are in place. Also, make sure that network ports are
Linux system iptables is an advanced utility firewall that helps a system admin to set up and control the rules of traffic over the network. Even though newer Linux distributions have replaced iptables with nftables, iptables are still popular because of their extensive documentation, administrator familiarity, and overall maturity. This tutorial aims to show the
On CentOS 9, opening and closing ports are important for managing network access. Opening specific or required ports allows only authorized services to access your network. On the other hand, closing unwanted and unnecessary ports helps prevent cyber attacks and enhances system security. Through this guided article, you will explore different methods of how to
Iptables, in Linux-based systems, are used for managing network traffic. These are the rules that control outgoing and incoming traffic, ensuring network security. You can keep networks safe by allowing only authorized traffic by inspecting them through the listing. Additionally, you can delete unwanted IPTables and firewall rules from your Ubuntu system. This post aims