Make Tech Easier published an overview of tools to secure your Linux server.

The Best Open Source Tools to Secure Your Linux Server

While Linux does have a variety of security features to help make it safer, it’s not impenetrable, which is why you need open-source tools to secure your Linux server. You need the right software to sniff out potential attacks and vulnerabilities. On its own Linux isn’t going to keep your server safe. It’s the other security measures you take. Luckily, open-source tools make this job easier. 

The Best Open Source Tools to Secure Your Linux Server