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Diffstat (limited to 'package/iptables/files/firewall.user')
| -rwxr-xr-x | package/iptables/files/firewall.user | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/package/iptables/files/firewall.user b/package/iptables/files/firewall.user new file mode 100755 index 0000000000..f13f50bf66 --- /dev/null +++ b/package/iptables/files/firewall.user @@ -0,0 +1,31 @@ +#!/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 |