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public shellscript v1 · immutable#!/bin/sh # Copyright (C) 2006 OpenWrt.org iptables -F input_rule iptables -F output_rule iptables -F forwarding_rule iptables -t nat -F prerouting_rule iptables -t nat -F postrouting_rule # The following chains are for traffic directed at the IP of the # WAN interface iptables -F input_wan iptables -F forwarding_wan iptables -t nat -F prerouting_wan ### Open port to WAN ## -- This allows port 22 to be answered by (dropbear on) the router # iptables -t nat -A prerouting_wan -p tcp --dport 22 -j ACCEPT # iptables -A input_wan -p tcp --dport 22 -j ACCEPT ### Port forwarding ## -- This forwards port 8080 on the WAN to port 80 on 192.168.1.2 iptables -t nat -A prerouting_wan -p tcp --dport 21 -j DNAT --to 10.0.0.2:21 # iptables -t nat -A prerouting_wan -p tcp --dport 8080 -j DNAT --to 192.168.1.2:80 # iptables -A forwarding_wan -p tcp --dport 80 -d 192.168.1.2 -j ACCEPT ### DMZ ## -- Connections to ports not handled above will be forwarded to 192.168.1.2 # iptables -t nat -A prerouting_wan -j DNAT --to 192.168.1.2 # iptables -A forwarding_wan -d 192.168.1.2 -j ACCEPT