Script Buat Block IP Yang Coba2 Login

kita bisa mendafarkan ip yg berusaha masuk ke daftar black-list, contoh untuk ssh sbb:

dibawah untuk usaha pertama masuk, jika membandel diproses ke tahap berikutnya

Code:

add chain=input protocol=tcp dst-port=22 connection-state=new \
action=add-src-to-address-list address-list=bl_list_ssh1 address-list-timeout=1m comment="" \
disabled=no

add chain=input protocol=tcp dst-port=22 connection-state=new \
src-address-list=bl_list_ssh1 action=add-src-to-address-list address-list=bl_list_ssh2 address-list-timeout=1m \
comment="" disabled=no

add chain=input protocol=tcp dst-port=22 connection-state=new \
src-address-list=bl_list_ssh2 action=add-src-to-address-list address-list=bl_list_ssh3 address-list-timeout=1m \
comment="" disabled=no

add chain=input protocol=tcp dst-port=22 connection-state=new \
src-address-list=bl_list_ssh3 action=add-src-to-address-list address-list=black_list address-list-timeout=1d \
comment="" disabled=no

nah akhirnya kalo masih bandel udah 3 kali mo nyoba masuk terus, maka ip nya di ban selama 1 hari (lihat timeout diatas).

Code:

/ ip firewall filter
add chain=input protocol=tcp dst-port=22 src-address-list=black_list action=drop \
comment="drop ssh brute forcers" disabled=no

cara 2, lebih simpel:

Code:

/ ip firewall filter
add chain=input in-interface=ether1 protocol=tcp dst-port=22 src-address-list=ftp_blacklist action=drop

# accept 10 incorrect logins per minute
/ ip firewall filter
add chain=output action=accept protocol=tcp content=530 Login incorrect dst-limit=1/1m,9,dst-address/1m

#add to blacklist
add chain=output action=add-dst-to-address-list protocol=tcp content=530 Login incorrect address-list=blacklist address-list-timeout=3h

kalo kode diatas ini jika dalam 1 menit berusaha 10 kali login (lht script baris kedua, dst-limit=1/1m,9 di login nya yg kesepuluh masuk daftar hitam dan diban selama 3jam, address-list=blacklist address-list-timeout=3h).

kalo mo dibuat range juga bisa portnya tinggal dikasi dst-port=21-23 (utk ftp,ssh,telnet)