http://www.rmk.soseza.sk/spravca_soue/Mikrotik/Mikrotik_Brute-Force/Brute-Force.htm ip firewall filter add chain=input protocol=tcp dst-port=22 src-address-list=ssh_blacklist action=drop comment="1_SSH* drop ssh brute forcers" disabled=no ip firewall filter add chain=input protocol=tcp dst-port=22 connection-state=new src-address-list=ssh_stage3 action=add-src-to-address-list address-list=ssh_blacklist address-list-timeout=10d comment="2_SSH* drop ssh brute forcers " disabled=no ip firewall filter add chain=input protocol=tcp dst-port=22 connection-state=new src-address-list=ssh_stage2 action=add-src-to-address-list address-list=ssh_stage3 address-list-timeout=1m comment="3_SSH* drop ssh brute forcers" disabled=no ip firewall filter add chain=input protocol=tcp dst-port=22 connection-state=new src-address-list=ssh_stage1 action=add-src-to-address-list address-list=ssh_stage2 address-list-timeout=1m comment="4_SSH* drop ssh brute forcers " disabled=no ip firewall filter add chain=input protocol=tcp dst-port=22 connection-state=new action=add-src-to-address-list address-list=ssh_stage1 address-list-timeout=1m comment="5_SSH* drop ssh brute forcers" disabled=no RMK 18.V.2022