December 21, 2025
Tutorials

How to Check Firewall Status on Debian 13

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

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Security Tutorials

How to Install UFW on Debian 12

Uncomplicated Firewall (UFW) is a command-line interface for manipulating iptables rules in a simplified and easy-to-understand way. One of the early tasks you should perform once Debian is installed is to secure your system’s ports. Rather than using your classic iptables rules, you can use easy-to-remember ufw rules to set your firewall up. That’s fantastic

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Tutorials

How to Add Comments to UFW Rules: 7 Mostly Used Examples

Comments are annotations that accompany UFW rules, providing clarity on the rule’s intent, which is particularly useful when managing a large number of rules. Adding comments to UFW rules is a best practice for system administrators as it provides clarity on the purpose of each rule, making management and auditing of the firewall easier. With

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Tutorials

How to Install UFW on Ubuntu 22.04

UFW stands for “Uncomplicated Firewall,” and it is a user-friendly command-line interface for managing iptables, which is a firewall management tool in Ubuntu and many other Linux distributions. UFW is designed to make it easier for users, especially those who are not well-versed in firewall configuration, to set up and manage network filtering rules to

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