Only masquerade LAN, other settings need manual tweaking

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

diff --git a/package/iptables/files/firewall.init b/package/iptables/files/firewall.init
index 310b0ec09c415219bb155b38a173a9672b598259..e1013fb8e7a6cb6ebfb3211f2f56854ad285e83e 100755 (executable)
--- a/package/iptables/files/firewall.init
+++ b/package/iptables/files/firewall.init
@@ -6,10 +6,14 @@ START=45
 start() {
        include /lib/network
        scan_interfaces
+       config_load /var/state/network
        
        config_get WAN wan ifname
        config_get WANDEV wan device
        config_get LAN lan ifname
+       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)
        
        ## CLEAR TABLES
        for T in filter nat; do
@@ -104,7 +108,8 @@ 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 $WAN -j MASQUERADE
+       ### Only LAN
+       [ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src $LAN_NET/$LAN_MASK -o $WAN -j MASQUERADE
 
        iptables -t nat -A NEW -m limit --limit 50 --limit-burst 100 -j RETURN && \
                iptables -t nat -A NEW -j DROP