Konfigurasi Firewall Mikrotik Simpel & Powerfull

Membuat firewall mikrotik yang simple akan tetapi powerfull.
Berikut untuk firewall managementnya

1. Untuk filter brute forces

/ ip firewall filter
add chain=input protocol=tcp dst-port=22 src-address-list=ssh_blacklist action=drop comment=”Drop SSH brute forcers” disabled=no
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=1w3d comment=”” disabled=no
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=”” disabled=no
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=”” disabled=no
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=”” \
disabled=no

2. Untuk filter port scaning
/ 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

3. Untuk filter port FTP

/ ip firewall filter

add chain=input protocol=tcp dst-port=21 src-address-list=ftp_blacklist action=drop comment=”Filter FTP to Box” disabled=no
add chain=output protocol=tcp content=”530 Login incorrect” dst-limit=1/1m,9,dst-address/1m action=accept comment=”” disabled=no
add chain=output protocol=tcp content=”530 Login incorrect” action=add-dst-to-address-list address-list=ftp_blacklist address-list-timeout=3h comment=”” \
disabled=no

4. Untuk separate packet flag

/ ip firewall filter

add chain=forward protocol=tcp action=jump jump-target=tcp comment=”Separate Protocol into Chains” disabled=no
add chain=forward protocol=udp action=jump jump-target=udp comment=”” disabled=no
add chain=forward protocol=icmp action=jump jump-target=icmp comment=”” disabled=no

5. Untuk blocking UDP taffik setan

/ ip firewall filter
add chain=udp protocol=udp dst-port=69 action=drop comment=”Blocking UDP Packet” disabled=no
add chain=udp protocol=udp dst-port=111 action=drop comment=”” disabled=no
add chain=udp protocol=udp dst-port=135 action=drop comment=”” disabled=no
add chain=udp protocol=udp dst-port=137-139 action=drop comment=”” disabled=no
add chain=udp protocol=udp dst-port=2049 action=drop comment=”” disabled=no
add chain=udp protocol=udp dst-port=3133 action=drop comment=”” disabled=no

6. Untuk blocking tcp traffik setan

/ ip firewall filter

add chain=tcp protocol=tcp dst-port=69 action=drop comment=”Bloking TCP Packet” disabled=no
add chain=tcp protocol=tcp dst-port=111 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=119 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=135 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=137-139 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=445 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=2049 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=12345-12346 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=20034 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=3133 action=drop comment=”” disabled=no
add chain=tcp protocol=tcp dst-port=67-68 action=drop comment=”” disabled=no

7. Untuk bloking bukis mail traffic

/ ip firewall filter

add chain=forward protocol=tcp dst-port=25 action=drop comment=”Allow SMTP” disabled=no

8. Untuk membuat filter DOS

/ ip firewall filter

add chain=icmp protocol=icmp icmp-options=0:0-255 limit=5,5 action=accept comment=”Limited Ping Flood” disabled=no
add chain=icmp protocol=icmp icmp-options=3:3 limit=5,5 action=accept comment=”” disabled=no
add chain=icmp protocol=icmp icmp-options=3:4 limit=5,5 action=accept comment=”” disabled=no
add chain=icmp protocol=icmp icmp-options=8:0-255 limit=5,5 action=accept comment=”” disabled=no
add chain=icmp protocol=icmp icmp-options=11:0-255 limit=5,5 action=accept comment=”” disabled=no
add chain=icmp protocol=icmp action=drop comment=”” disabled=no

9. Yntuk membuat fileter koneksi P2P

/ ip firewall filter

add chain=forward p2p=all-p2p action=accept comment=”trafik P2P ” disabled=no

10. Untuk membuat filter akses jalur mapping network

/ ip firewall filter
add chain=input dst-address-type=broadcast,multicast action=accept comment=”Allow Broadcast Traffic” disabled=no
add chain=input src-address=192.168.0.0/28 action=accept comment=”Allow access to router from known network” disabled=no
add chain=input src-address=192.168.1.0/24 action=accept comment=”” disabled=no
add chain=input src-address=192.168.2.0/30 action=accept comment=”” disabled=no
add chain=input src-address=125.162.0.0/16 action=accept comment=”” disabled=no

11. Untuk membuat filter koneksi junk dan jalur koneksi yang benar

/ ip firewall filter

add chain=input connection-state=established action=accept comment=”Connection State” disabled=no
add chain=input connection-state=related action=accept comment=”” disabled=no
add chain=input connection-state=invalid action=drop comment=”” disabled=no