[Guide] Securing a Linux server

Hello Spigot Community,

So I have decided to create this guide, this will be a basic guide to securing a Linux server and will cover Ubuntu, CentOS and Debian. this guide should also work on Red Hat, though it is not guaranteed. It applies to any other distributions, though the methods here may not work on other distributions and finding the method that works may involve a bit of research. This guide applies to any Dedicated Servers or VPSs...

[Guide] Securing a Linux server