I'm greatfully using this CentOS tutorial to setup a file server/mess around with data driven website/ftp server. The tutorial I am using is ...

Once you have CentOS 7 up and running, you'll want to lock down that server with two-factor authentication. Every administrator should consider enabling this additional layer of security.

With CentOS Stream now "tracking ahead" of Red Hat Enterprise Linux, where exactly does that leave Fedora, Red Hat's community Linux distro, and long-time RHEL test release?

If you serve up files with a Linux machine, you should watch for malicious code. Follow this tutorial on how to add Linux Malware Detector and ClamAV for this very purpose.