clean up firewall examples

SVN-Revision: 3319

diff --git a/openwrt/package/base-files/default/etc/firewall.user b/openwrt/package/base-files/default/etc/firewall.user
index 7a13141623a659bfd9ba5cda188b7e02866ccf23..c19f596887fbee1f1f0080b4444cccfe0efcac47 100755 (executable)
--- a/openwrt/package/base-files/default/etc/firewall.user
+++ b/openwrt/package/base-files/default/etc/firewall.user
@@ -11,17 +11,21 @@ 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.
+## 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.
 
-### Allow SSH on the WAN interface
+### 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
-# 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
+## -- 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 (should be placed after port forwarding / accept rules)
+### 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