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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2006-04-05 02:09:22 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2006-04-05 02:09:22 +0000
commit676c017ecfced2e37aeec176f8aa6b9df90024f3 (patch)
treef5913675e5868c535c007efb3e09a01ce6890287 /package/iptables/files/firewall.user
parent71d39e274f5c2847a1b2eedd4afa8e298029f93d (diff)
large init script cleanup and merge of whiterussian changes, new dnsmasq config handling
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3588 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/iptables/files/firewall.user')
-rwxr-xr-xpackage/iptables/files/firewall.user31
1 files changed, 31 insertions, 0 deletions
diff --git a/package/iptables/files/firewall.user b/package/iptables/files/firewall.user
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+++ b/package/iptables/files/firewall.user
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+#!/bin/sh
+. /etc/config/network
+
+WAN="$wan_ifname"
+LAN="$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" is used to match packets that come in via the $WAN interface.
+## it WILL NOT MATCH packets sent from the $WAN ip address -- you won't be able
+## to see the effects from within the LAN.
+
+### Open port to WAN
+## -- This allows port 22 to be answered by (dropbear on) the router
+# 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
+## -- This forwards port 8080 on the WAN to port 80 on 192.168.1.2
+# iptables -t nat -A prerouting_rule -i $WAN -p tcp --dport 8080 -j DNAT --to 192.168.1.2:80
+# iptables -A forwarding_rule -i $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_rule -i $WAN -j DNAT --to 192.168.1.2
+# iptables -A forwarding_rule -i $WAN -d 192.168.1.2 -j ACCEPT