Howtoforge published a tutorial about installing Fail2ban with Firewalld on Rocky Linux 8.4.
How to Install Fail2ban with Firewalld on Rocky Linux 8.4
Fail2ban is a system daemon for protecting servers from malicious login and brute-force attacks. Fail2ban is an open-source IPS (Intrusion Prevention Software) framework written in Python and it's extremely configurable. It works as a daemon service that will monitor SystemD journal and log files and then looking for any failed authentication attempts. When the failed authentication reaches the max X number, the fail2ban will automatically block the IP address using the firewall software.
