Unixcop shows you how to block SSH brute force attacks using SSHGUARD.

How to Block SSH Brute Force Attacks Using SSHGUARD

SSHGuard is an open-source daemon that shields hosts from brute-force attacks. It accomplishes this through monitoring and aggregation of system logs, detecting attacks, and blocking attackers using one of the Linux firewall backends: iptables, FirewallD, pf, and ipfw.

How to Block SSH Brute Force Attacks Using SSHGUARD - Unixcop the Unix / Linux the admins deams