#!/bin/bash
echo Setting firewall rules...


# vidage
iptables -t filter -F
iptables -t filter -X

# avant tout : autoriser SSH
iptables -t filter -A INPUT -p tcp --dport 22 -j ACCEPT

# ne pas casser les connexions etablies
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

# interdire toute connexion entrante
iptables -t filter -P INPUT DROP
iptables -t filter -P FORWARD DROP

# interdire toute connexion sortante
iptables -t filter -P OUTPUT DROP

# autoriser les requetes DNS, FTP, HTTP (pour les mises a jour)
iptables -t filter -A OUTPUT -p tcp --dport 21 -j ACCEPT
iptables -t filter -A OUTPUT -p tcp --dport 80 -j ACCEPT
iptables -t filter -A OUTPUT -p udp --dport 53 -j ACCEPT

# autoriser loopback
iptables -t filter -A INPUT -i lo -j ACCEPT
iptables -t filter -A OUTPUT -o lo -j ACCEPT

# Autoriser ping
iptables -t filter -A INPUT -p icmp -j ACCEPT

# Autres ports
iptable -t filter -A OUTPUT -p tcp --dport 8767 -j ACCEPT
iptable -t filter -A OUTPUT -p tcp --dport 8001 -j ACCEPT
iptable -t filter -A OUTPUT -p tcp --dport 8100 -j ACCEPT
iptable -t filter -A OUTPUT -p tcp --dport 27015 -j ACCEPT
iptable -t filter -A OUTPUT -p tcp --dport 27045 -j ACCEPT
iptable -t filter -A OUTPUT -p tcp --dport 27046 -j ACCEPT
iptable -t filter -A OUTPUT -p tcp --dport 5000 -j ACCEPT
iptable -t filter -A OUTPUT -p tcp --dport 27000 -j ACCEPT