MIKROTIK - MENGHINDARI PORT SCANNER DARI HACKER

Tambahkan di bagian filter:

Code:
/ip firewall filter
add chain=input protocol=tcp psd=21,3s,3,1 action=add-src-to-address-list addresslist="port
scanners" address-list-timeout=2w comment="Port scanners to list " disabled=no

Chain ini dipakai untuk mendaftar ip ke black-list address list
Chain selanjutnya untuk mendeteksi apakah ada indikasi aktifitas port scanner:

Code:
add chain=input protocol=tcp tcp-flags=fin,!syn,!rst,!psh,!ack,!urg action=add-srcto-address-list
address-list="port scanners" address-list-timeout=2w comment="NMAP FIN Stealth scan"
add chain=input protocol=tcp tcp-flags=fin,syn action=add-src-to-address-list
address-list="port scanners" address-list-timeout=2w comment="SYN/FIN scan"
add chain=input protocol=tcp tcp-flags=syn,rst action=add-src-to-address-list
address-list="port scanners" address-list-timeout=2w comment="SYN/RST scan"
add chain=input protocol=tcp tcp-flags=fin,psh,urg,!syn,!rst,!ack action=add-src-toaddress-list
address-list="port scanners" address-list-timeout=2w comment="FIN/PSH/URG scan"
add chain=input protocol=tcp tcp-flags=fin,syn,rst,psh,ack,urg action=add-src-toaddress-list
address-list="port scanners" address-list-timeout=2w comment="ALL/ALL scan"
add chain=input protocol=tcp tcp-flags=!fin,!syn,!rst,!psh,!ack,!urg action=add-srcto-address-list
address-list="port scanners" address-list-timeout=2w comment="NMAP NULL scan"

jika ada tanda tanda dari kejadian di atas, maka harus didrop scanning IPnya pakai perintah ini:

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

sumber:
HTML Code:
http://wiki.mikrotik.com/wiki/Drop_port_scanners