#!/bin/sh

iptables -F

iptables -P INPUT DROP
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -i lo -j ACCEPT

iptables -A INPUT -s 59.50.203.0/24 -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -s 192.168..0/16 -p tcp --dport 22 -j ACCEPT

