How to Install and configure the CSF Firewall in Linux

Learn to install & configure the open-source, easy and one of the best firewall service in a Linux System.

CSF is a firewall configuration tool for Linux systems that provides enhanced security for servers by blocking malicious traffic and allowing only authorized traffic. It is easy to install and configure and can be used to secure servers running various services such as Apache, Postfix, Exim, and more. CSF includes features such as login/intrusion detection, IP blocking, and SYN flood protection to help protect servers from various types of attacks. It also includes a command-line interface and a web-based GUI for ease of use and management.

[AlirezaMirhabibi]

Thanks, is there any way to detect suspicious ip address and block automatically using CSF ?

[michaels]

Thanks for the tutorial. It would be nice to see a tutorial on how to find the action that has been taken by CSF firewall. I'm coming from fail2ban, and like how I can configure the ban time and see the total banned and current banned IPs for a particular service like SSHD.