package/ov51x-jpeg:

[openwrt.git] / package / iptables / files / firewall.init

diff --git a/package/iptables/files/firewall.init b/package/iptables/files/firewall.init
index 68fc3de..0da97f8 100755 (executable)
--- a/package/iptables/files/firewall.init
+++ b/package/iptables/files/firewall.init
@@ -2,7 +2,7 @@
 # Copyright (C) 2006 OpenWrt.org
 
 ## Please make changes in /etc/firewall.user
-START=35
+START=45
 start() {
        include /lib/network
        scan_interfaces
@@ -10,6 +10,13 @@ start() {
        config_get WAN wan ifname
        config_get WANDEV wan device
        config_get LAN lan ifname
+       config_get_bool NAT_LAN lan nat 1
+       if [ $NAT_LAN -ne 0 ]
+       then
+               config_get LAN_MASK lan netmask
+               config_get LAN_IP lan ipaddr
+               LAN_NET=$(/bin/ipcalc.sh $LAN_IP $LAN_MASK | grep NETWORK | cut -d= -f2)
+       fi
        
        ## CLEAR TABLES
        for T in filter nat; do
@@ -104,16 +111,20 @@ start() {
        iptables -t nat -A PREROUTING -j prerouting_rule
        [ -z "$WAN" ] || iptables -t nat -A PREROUTING -i "$WAN" -j prerouting_wan
        iptables -t nat -A POSTROUTING -j postrouting_rule
-       [ -z "$WAN" ] || iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE
+       ### Only LAN, unless told not to
+       if [ $NAT_LAN -ne 0 ]
+       then
+               [ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src $LAN_NET/$LAN_MASK -o $WAN -j MASQUERADE
+       fi
 
        iptables -t nat -A NEW -m limit --limit 50 --limit-burst 100 -j RETURN && \
                iptables -t nat -A NEW -j DROP
 
        ## USER RULES
        [ -f /etc/firewall.user ] && . /etc/firewall.user
-       [ -n "$WAN" -a -e /etc/config/firewall ] && {
+       [ -n "$WAN" -a -e /etc/firewall.config ] && {
                export WAN
-               awk -f /usr/lib/common.awk -f /usr/lib/firewall.awk /etc/config/firewall | ash
+               awk -f /usr/lib/common.awk -f /usr/lib/firewall.awk /etc/firewall.config | ash
        }
 }