Simple Firewall Filter di Mikrotik

Firewall Untuk Mikrotik 

A. Proteksi Untuk Router

add action=accept chain=input comment="Accept established connections" connection-state=established disabled=no
add action=accept chain=input comment="Accept related connections" connection-state=related disabled=no
add action=drop chain=input comment="Drop invalid connections" connection-state=invalid disabled=no
add action=accept chain=input comment=UDP disabled=no protocol=udp
add action=accept chain=input comment="Allow limited pings" disabled=no limit=50/5s,2 protocol=icmp
add action=drop chain=input comment="Drop excess pings" disabled=no protocol=icmp
add action=accept chain=input comment="SSH for secure shell" disabled=no dst-port=22 protocol=tcp
add action=accept chain=input comment=winbox disabled=no dst-port=8291 protocol=tcp
add action=accept chain=input comment="From our private LAN" disabled=no src-address=192.168.1.0/24
add action=accept chain=input comment="From proxy" disabled=no src-address=192.168.0.0/24
add action=drop chain=input comment="Drop everything else" disabled=no 

B. Proteksi akses tambahan ke router
Cukup diblock dan dipaste di new terminal.

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="NMAP FIN Stealth scan" 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="SYN/FIN scan" 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="SYN/RST scan" 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="FIN/PSH/URG scan" 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="ALL/ALL scan" 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="NMAP NULL scan" disabled=no
add chain=input src-address-list="port scanners" action=drop comment="dropping port scanners" disabled=no
add chain=forward src-address-list="port scanners" action=drop comment="dropping port scanners" disabled=no

C. Block Port2 Virus
Cukup diblock dan dipaste di new terminal
add chain=forward action=jump jump-target=virus comment="jump to the virus chain"
add chain=virus protocol=tcp dst-port=135-139 action=drop comment="Drop Blaster Worm"
add chain=virus protocol=udp dst-port=135-139 action=drop comment="Drop Messenger Worm"
add chain=virus protocol=tcp dst-port=445 action=drop comment="Drop Blaster Worm"
add chain=virus protocol=udp dst-port=445 action=drop comment="Drop Conficker Worm"
add chain=virus protocol=tcp dst-port=5933 action=drop comment="Drop Conficker "
add chain=virus protocol=tcp dst-port=4691 action=drop comment="Drop Conficker 2"
add chain=virus protocol=tcp dst-port=593 action=drop comment="Drop Kido Worm"
add chain=virus protocol=tcp dst-port=1024-1030 action=drop comment="________"
add chain=virus protocol=tcp dst-port=1080 action=drop comment="Drop MyDoom"
add chain=virus protocol=tcp dst-port=1214 action=drop comment="________"
add chain=virus protocol=tcp dst-port=1363 action=drop comment="ndm requester"
add chain=virus protocol=tcp dst-port=1364 action=drop comment="ndm server"
add chain=virus protocol=tcp dst-port=1368 action=drop comment="screen cast"
add chain=virus protocol=tcp dst-port=1373 action=drop comment="hromgrafx"
add chain=virus protocol=tcp dst-port=1377 action=drop comment="cichlid"
add chain=virus protocol=tcp dst-port=1433-1434 action=drop comment="Worm"
add chain=virus protocol=tcp dst-port=2745 action=drop comment="Bagle Virus"
add chain=virus protocol=tcp dst-port=2283 action=drop comment="Drop Dumaru.Y"
add chain=virus protocol=tcp dst-port=2535 action=drop comment="Drop Beagle"
add chain=virus protocol=tcp dst-port=2745 action=drop comment="Drop Beagle.C-K"
add chain=virus protocol=tcp dst-port=3127 action=drop comment="Drop MyDoom"
add chain=virus protocol=tcp dst-port=3410 action=drop comment="Drop Backdoor OptixPro"
add chain=virus protocol=tcp dst-port=4444 action=drop comment="Worm"
add chain=virus protocol=udp dst-port=4444 action=drop comment="Worm"
add chain=virus protocol=tcp dst-port=5554 action=drop comment="Drop Sasser"
add chain=virus protocol=tcp dst-port=4899 action=drop comment="Drop Radmin"
add chain=virus protocol=tcp dst-port=8866 action=drop comment="Drop Beagle.B"
add chain=virus protocol=tcp dst-port=9898 action=drop comment="Drop Dabber.A-B"
add chain=virus protocol=tcp dst-port=10000 action=drop comment="Drop Dumaru.Y"
add chain=virus protocol=tcp dst-port=10080 action=drop comment="Drop MyDoom.B"
add chain=virus protocol=tcp dst-port=12345 action=drop comment="Drop NetBus"
add chain=virus protocol=tcp dst-port=17300 action=drop comment="Drop Kuang2"
add chain=virus protocol=tcp dst-port=27374 action=drop comment="Drop SubSeven"
add chain=virus protocol=tcp dst-port=65506 action=drop comment="Drop PhatBot, Agobot, Gaobot"
add action=drop chain=virus comment=p2p disabled=no p2p=all-p2p

Tutup dengan :
add chain=forward action=accept protocol=tcp dst-port=80 comment="Allow HTTP"
add chain=forward action=accept protocol=tcp dst-port=25 comment="Allow SMTP"
add chain=forward protocol=tcp comment="allow TCP"
add chain=forward protocol=icmp comment="allow ping"
add chain=forward protocol=udp comment="allow udp"
add chain=forward action=drop comment="drop everything else"