replace br0 with $LAN

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

diff --git a/package/iptables/files/firewall.init b/package/iptables/files/firewall.init
index e174d84..6f1ba8b 100755 (executable)
--- a/package/iptables/files/firewall.init
+++ b/package/iptables/files/firewall.init
@@ -1,96 +1,118 @@
-#!/bin/sh
+#!/bin/sh /etc/rc.common

 # Copyright (C) 2006 OpenWrt.org
 
 ## Please make changes in /etc/firewall.user
 # Copyright (C) 2006 OpenWrt.org
 
 ## Please make changes in /etc/firewall.user

+START=45
+start() {
+       include /lib/network
+       scan_interfaces
+       
+       config_get WAN wan ifname
+       config_get WANDEV wan device
+       config_get LAN lan ifname
+       
+       ## CLEAR TABLES
+       for T in filter nat; do
+               iptables -t $T -F
+               iptables -t $T -X
+       done
+       
+       iptables -N input_rule
+       iptables -N output_rule
+       iptables -N forwarding_rule
+       
+       iptables -t nat -N prerouting_rule
+       iptables -t nat -N postrouting_rule
+       
+       iptables -N LAN_ACCEPT
+       [ -z "$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
+       ###  (connections with the router as destination)
+       
+       # base case
+       iptables -P INPUT DROP
+       iptables -A INPUT -m state --state INVALID -j DROP
+       iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+       iptables -A INPUT -p tcp --tcp-flags SYN SYN --tcp-option \! 2 -j  DROP
+       
+       #
+       # insert accept rule or to jump to new accept-check table here
+       #
+       iptables -A INPUT -j input_rule
+       
+       # allow
+       iptables -A INPUT -j LAN_ACCEPT # allow from lan/wifi interfaces 
+       iptables -A INPUT -p icmp       -j ACCEPT       # allow ICMP
+       iptables -A INPUT -p gre        -j ACCEPT       # allow GRE
+       
+       # reject (what to do with anything not allowed earlier)
+       iptables -A INPUT -p tcp -j REJECT --reject-with tcp-reset
+       iptables -A INPUT -j REJECT --reject-with icmp-port-unreachable
+       
+       ### OUTPUT
+       ### (connections with the router as source)
+       
+       # base case
+       iptables -P OUTPUT DROP
+       iptables -A OUTPUT -m state --state INVALID -j DROP
+       iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+       
+       #
+       # insert accept rule or to jump to new accept-check table here
+       #
+       iptables -A OUTPUT -j output_rule
+       
+       # allow
+       iptables -A OUTPUT -j ACCEPT            #allow everything out
+       
+       # reject (what to do with anything not allowed earlier)
+       iptables -A OUTPUT -p tcp -j REJECT --reject-with tcp-reset
+       iptables -A OUTPUT -j REJECT --reject-with icmp-port-unreachable
+       
+       ### FORWARDING
+       ### (connections routed through the router)
+       
+       # base case
+       iptables -P FORWARD DROP 
+       iptables -A FORWARD -m state --state INVALID -j DROP
+       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
+       
+       #
+       # insert accept rule or to jump to new accept-check table here
+       #
+       iptables -A FORWARD -j forwarding_rule
+       
+       # allow
+       iptables -A FORWARD -i $LAN -o $LAN -j ACCEPT
+       [ -z "$WAN" ] || iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT
+       
+       # reject (what to do with anything not allowed earlier)
+       # uses the default -P DROP
+       
+       ### MASQ
+       iptables -t nat -A PREROUTING -j prerouting_rule
+       iptables -t nat -A POSTROUTING -j postrouting_rule
+       [ -z "$WAN" ] || iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE
+       
+       ## USER RULES
+       [ -f /etc/firewall.user ] && . /etc/firewall.user
+       [ -n "$WAN" -a -e /etc/config/firewall ] && {
+               export WAN
+               awk -f /usr/lib/common.awk -f /usr/lib/firewall.awk /etc/config/firewall | ash
+       }
+}

 
 

-. /etc/config/network
-WAN="$wan_ifname"
-LAN="$lan_ifname"
-
-## CLEAR TABLES
-for T in filter nat; do
-  iptables -t $T -F
-  iptables -t $T -X
-done
-
-iptables -N input_rule
-iptables -N output_rule
-iptables -N forwarding_rule
-
-iptables -t nat -N prerouting_rule
-iptables -t nat -N postrouting_rule
-
-### INPUT
-###  (connections with the router as destination)
-
-  # base case
-  iptables -P INPUT DROP
-  iptables -A INPUT -m state --state INVALID -j DROP
-  iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-  iptables -A INPUT -p tcp --tcp-flags SYN SYN --tcp-option \! 2 -j  DROP
-
-  #
-  # insert accept rule or to jump to new accept-check table here
-  #
-  iptables -A INPUT -j input_rule
-
-  # allow
-  [ -z "$WAN" ] || iptables -A INPUT -i \! $WAN        -j ACCEPT       # allow from lan/wifi interfaces 
-  iptables -A INPUT -p icmp    -j ACCEPT       # allow ICMP
-  iptables -A INPUT -p gre     -j ACCEPT       # allow GRE
-
-  # reject (what to do with anything not allowed earlier)
-  iptables -A INPUT -p tcp -j REJECT --reject-with tcp-reset
-  iptables -A INPUT -j REJECT --reject-with icmp-port-unreachable
-
-### OUTPUT
-### (connections with the router as source)
-
-  # base case
-  iptables -P OUTPUT DROP
-  iptables -A OUTPUT -m state --state INVALID -j DROP
-  iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-
-  #
-  # insert accept rule or to jump to new accept-check table here
-  #
-  iptables -A OUTPUT -j output_rule
-
-  # allow
-  iptables -A OUTPUT -j ACCEPT         #allow everything out
-
-  # reject (what to do with anything not allowed earlier)
-  iptables -A OUTPUT -p tcp -j REJECT --reject-with tcp-reset
-  iptables -A OUTPUT -j REJECT --reject-with icmp-port-unreachable
-
-### FORWARDING
-### (connections routed through the router)
-
-  # base case
-  iptables -P FORWARD DROP 
-  iptables -A FORWARD -m state --state INVALID -j DROP
-  iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
-  iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-
-  #
-  # insert accept rule or to jump to new accept-check table here
-  #
-  iptables -A FORWARD -j forwarding_rule
-
-  # allow
-  iptables -A FORWARD -i br0 -o br0 -j ACCEPT
-  [ -z "$WAN" ] || iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT
-
-  # reject (what to do with anything not allowed earlier)
-  # uses the default -P DROP
-
-### MASQ
-  iptables -t nat -A PREROUTING -j prerouting_rule
-  iptables -t nat -A POSTROUTING -j postrouting_rule
-  [ -z "$WAN" ] || iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE
-
-## USER RULES
-[ -f /etc/firewall.user ] && . /etc/firewall.user
-[ -n "$WAN" -a -e /etc/config/firewall ] && {
-       awk -f /usr/lib/common.awk -f /usr/lib/firewall.awk /etc/config/firewall | ash
+stop() {
+       iptables -P INPUT ACCEPT
+       iptables -P OUTPUT ACCEPT
+       iptables -P FORWARD ACCEPT
+       iptables -F
+       iptables -t nat -P PREROUTING ACCEPT
+       iptables -t nat -P POSTROUTING ACCEPT
+       iptables -t nat -P OUTPUT ACCEPT
+       iptables -t nat -F

 }
 }