Howtoforge published a tutorial about installing Fail2Ban on CentOS 8 and Fedora 33.
How to Install and Configure Fail2Ban on CentOS 8 and Fedora 33
Fail2Ban is a log parsing utility that scans log files of various processes and bans IP addresses that make too many password failures.
How to Install and Configure Fail2Ban on CentOS 8 and Fedora 33