Block IP Scanners (NMAP)

/ ip firewall filter

add chain=input protocol=tcp psd=21,3s,3,1 action=add-src-to-address-list \
address-list="port scanners" address-list-timeout=2w comment="Port \
Scanners to list " disabled=no

add chain=input protocol=tcp tcp-flags=fin,!syn,!rst,!psh,!ack,!urg \
action=add-src-to-address-list address-list="port scanners" \
address-list-timeout=2w comment="" disabled=no

add chain=input protocol=tcp tcp-flags=fin,syn action=add-src-to-address-list \
address-list="port scanners" address-list-timeout=2w comment="" \
disabled=no

add chain=input protocol=tcp tcp-flags=syn,rst action=add-src-to-address-list \
address-list="port scanners" address-list-timeout=2w comment="" \
disabled=no

add chain=input protocol=tcp tcp-flags=fin,psh,urg,!syn,!rst,!ack \
action=add-src-to-address-list address-list="port scanners" \
address-list-timeout=2w comment="" disabled=no

add chain=input protocol=tcp tcp-flags=fin,syn,rst,psh,ack,urg \
action=add-src-to-address-list address-list="port scanners" \
address-list-timeout=2w comment="" disabled=no

add chain=input protocol=tcp tcp-flags=!fin,!syn,!rst,!psh,!ack,!urg \
action=add-src-to-address-list address-list="port scanners" \
address-list-timeout=2w comment="" disabled=no

add chain=input src-address-list="port scanners" action=drop comment="" \
disabled=no

sumber : http://baratev.sourceforge.net/stuff/mt.firewall.txt

Posted in: Mikrotik