Blokir Proxy dan DNS Mikrotik

/ip firewall rule
add comment="BLOKIR DNS DARI LUAR" chain=input action=drop connection-state=new protocol=udp in-interface=[interface internet ip publik] dst-port=53 log=no log-prefix=""
add comment="BLOKIR PROXY DARI LUAR" chain=input action=drop connection-state=new protocol=tcp in-interface=[interface internet ip publik] dst-port=[port proxy kita] log=no log-prefix=""

http://fikiranbersama.blogspot.co.id/2017/01/blokir-proxy-dan-dns-mikrotik.html