#!/bin/bash
iptables -F
iptables -X

iptables -P INPUT DROP
iptables -P OUTPUT DROP
iptables -P FORWARD DROP

iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT


iptables -A INPUT -p tcp --dport 80 -j ACCEPT
iptables -A OUTPUT -p tcp --sport 80 -j ACCEPT


iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

# xiaoxiao [ 2016-05-31 ]

# Address in this article

# http://www.s7smile.com/linux/2

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