#!/bin/sh
#
# iptables example configuration script
#
# Flush all current rules from iptables
#
iptables -F

#
# Set default policies for INPUT, FORWARD and OUTPUT chains
#
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT

#
# Allow SSH connections on tcp port 22
#
iptables -A INPUT -i eto0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A OUTPUT -o eto0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT

#
# Set access for localhost
#
iptables -A INPUT -i lo -j ACCEPT

#
# Accept connections on 1194 for vpn access from client
#
iptables -A INPUT -i eth0 -p udp --dport 1194 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A OUTPUT -o eth0 -p udp --sport 1194 -m state --state ESTABLISHED -j ACCEPT

#
# Apply forwarding for OpenVPN Tunneling
#
iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -s 10.8.0.0/24 -j ACCEPT
iptables -t nat -A POSTROUTING -s 10.8.0.0./24 -o eth0 -j MASQUERADE
iptables -A FORWARD -j REJECT

#
# Enable forwarding
#
echo 1 > /proc/sys/net/ipv4/ip_forward

#
# List rules
#
iptables -L -v