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openwrt-xburst/package/base-files/default/etc/firewall.user
nbd efbc756b23 some fixes/cleanups for the init scripts
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2152 3c298f89-4303-0410-b956-a3cf2f4a3e73
2005-10-17 21:27:07 +00:00

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#!/bin/sh
. /etc/functions.sh
. /etc/network.overrides
[ "$FAILSAFE" != "true" -a -e /etc/config/network ] && . /etc/config/network
WAN=$(nvram get wan_ifname)
LAN=$(nvram get lan_ifname)
iptables -F input_rule
iptables -F output_rule
iptables -F forwarding_rule
iptables -t nat -F prerouting_rule
iptables -t nat -F postrouting_rule
### BIG FAT DISCLAIMER
### The "-i $WAN" literally means packets that came in over the $WAN interface;
### this WILL NOT MATCH packets sent from the LAN to the WAN address.
### Allow SSH on the WAN interface
# iptables -t nat -A prerouting_rule -i $WAN -p tcp --dport 22 -j ACCEPT
# iptables -A input_rule -i $WAN -p tcp --dport 22 -j ACCEPT
### Port forwarding
# iptables -t nat -A prerouting_rule -i $WAN -p tcp --dport 22 -j DNAT --to 192.168.1.2
# iptables -A forwarding_rule -i $WAN -p tcp --dport 22 -d 192.168.1.2 -j ACCEPT
### DMZ (should be placed after port forwarding / accept rules)
# iptables -t nat -A prerouting_rule -i $WAN -j DNAT --to 192.168.1.2
# iptables -A forwarding_rule -i $WAN -d 192.168.1.2 -j ACCEPT