Several tools can assist you in keeping your Linux system secure, but one tool stands out: config-server firewall (CSF). This tool is an all-in-one security solution for your Linux machine, and it offers many features that make it stand out from other options.

CSF was created by Daniel Borkmann, who wanted to create a tool that could help him with both personal and professional projects. As such, he created CSF with features like real-time log monitoring and alerts. It also has a built-in firewall with support for IPTables, which means you can use it to create advanced rules for blocking traffic and ports.

In addition to these features, CSF also comes with DDoS protection capabilities—a feature that will prove useful if you ever find yourself under attack by hackers or bots trying to take down your site.

Fellow Rocky Linux users: learn how to install and configure CSF on Rocky Linux 9 in the tutorial linked below. I found it very helpful and straightforward. Please reach out to me on X @lnxsec if you have any questions - I'd love to help!