By default, HeatShield dynamically updates your server's firewall to block IP addresses that have attempted brute force SSH login attacks from any further attacks.
To see the brute force blocker in action, open your server in HeatShield and click the Brute Force Blocking tab.
Here you'll be able to disable (or re-enable) HeatShield's brute force blocker and to view the IP addresses that are blocked from accessing your server.
IP addresses added to your whitelist will not be blocked by the brute force blocker even if they have multiple failed SSH/SFTP login attempts.
IP addresses can be added to your account in two ways: