MikroTik PORT KNOCKING GENERATOR
ICMP + PACKET SIZE METHOD
mikrotik_script.rsc
###############################################################
# Mikrotik Port Knocking Generator with Icmp + Packet Size
# Date/Time:
# Created By: Mua.lat - Ported to React
###############################################################
/ip firewall filter
add action=add-src-to-address-list address-list="port-knocking-first" \
address-list-timeout="00:00:00" chain=input packet-size="100" \
protocol=icmp comment="Port Knocking Generator"
add action=add-src-to-address-list address-list="port-knocking-second" \
address-list-timeout="00:00:00" chain=input packet-size="200" \
protocol=icmp src-address-list="port-knocking-first"
add action=accept chain=input dst-port="21,22,23" \
protocol=tcp src-address-list="port-knocking-second"
add action=drop chain=input dst-port="21,22,23" \
protocol=tcp src-address-list="!port-knocking-second"