#!/bin/sh
-${FAILSAFE:+return}
. /etc/functions.sh
WAN=$(nvram get wan_ifname)
LAN=$(nvram get lan_ifname)
iptables -t nat -N prerouting_rule
iptables -t nat -N postrouting_rule
-### Allow SSH from WAN
-# 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
-
### INPUT
### (connections with the router as destination)
# base case
iptables -P FORWARD DROP
iptables -A FORWARD -m state --state INVALID -j DROP
- iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
+ iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
# allow
iptables -A FORWARD -i br0 -o br0 -j ACCEPT
iptables -t nat -A PREROUTING -j prerouting_rule
iptables -t nat -A POSTROUTING -j postrouting_rule
iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE
+
+## USER RULES
+. /etc/firewall.user