fix the patch file

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

diff --git a/package/iptables/files/firewall.init b/package/iptables/files/firewall.init
index 1e39d05..310b0ec 100755 (executable)
--- a/package/iptables/files/firewall.init
+++ b/package/iptables/files/firewall.init
@@ -8,6 +8,7 @@ start() {
        scan_interfaces
        
        config_get WAN wan ifname
+       config_get WANDEV wan device
        config_get LAN lan ifname
        
        ## CLEAR TABLES
@@ -17,14 +18,19 @@ start() {
        done
        
        iptables -N input_rule
+       iptables -N input_wan
        iptables -N output_rule
        iptables -N forwarding_rule
-       
+       iptables -N forwarding_wan
+
+       iptables -t nat -N NEW
        iptables -t nat -N prerouting_rule
+       iptables -t nat -N prerouting_wan
        iptables -t nat -N postrouting_rule
        
        iptables -N LAN_ACCEPT
        [ -z "$WAN" ] || iptables -A LAN_ACCEPT -i "$WAN" -j RETURN
+       [ -z "$WANDEV" -o "$WANDEV" = "$WAN" ] || iptables -A LAN_ACCEPT -i "$WANDEV" -j RETURN
        iptables -A LAN_ACCEPT -j ACCEPT
        
        ### INPUT
@@ -40,6 +46,7 @@ start() {
        # insert accept rule or to jump to new accept-check table here
        #
        iptables -A INPUT -j input_rule
+       [ -z "$WAN" ] || iptables -A INPUT -i $WAN -j input_wan
        
        # allow
        iptables -A INPUT -j LAN_ACCEPT # allow from lan/wifi interfaces 
@@ -83,22 +90,29 @@ start() {
        # insert accept rule or to jump to new accept-check table here
        #
        iptables -A FORWARD -j forwarding_rule
+       [ -z "$WAN" ] || iptables -A FORWARD -i $WAN -j forwarding_wan
        
        # allow
-       iptables -A FORWARD -i br0 -o br0 -j ACCEPT
+       iptables -A FORWARD -i $LAN -o $LAN -j ACCEPT
        [ -z "$WAN" ] || iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT
        
        # reject (what to do with anything not allowed earlier)
        # uses the default -P DROP
        
        ### MASQ
+       iptables -t nat -A PREROUTING -m state --state NEW -p tcp -j NEW 
        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 $WAN -j MASQUERADE
-       
+
+       iptables -t nat -A NEW -m limit --limit 50 --limit-burst 100 -j RETURN && \
+               iptables -t nat -A NEW -j DROP
+
        ## USER RULES
        [ -f /etc/firewall.user ] && . /etc/firewall.user
        [ -n "$WAN" -a -e /etc/config/firewall ] && {
+               export WAN
                awk -f /usr/lib/common.awk -f /usr/lib/firewall.awk /etc/config/firewall | ash
        }
 }
@@ -108,8 +122,10 @@ stop() {
        iptables -P OUTPUT ACCEPT
        iptables -P FORWARD ACCEPT
        iptables -F
+       iptables -X
        iptables -t nat -P PREROUTING ACCEPT
        iptables -t nat -P POSTROUTING ACCEPT
        iptables -t nat -P OUTPUT ACCEPT
        iptables -t nat -F
+       iptables -t nat -X
 }