add firewall script change from whiterussian to head

[openwrt.git] / openwrt / target / default / target_skeleton / etc / init.d / S45firewall

diff --git a/openwrt/target/default/target_skeleton/etc/init.d/S45firewall b/openwrt/target/default/target_skeleton/etc/init.d/S45firewall
index 8f9b940..dc429f2 100755 (executable)
--- a/openwrt/target/default/target_skeleton/etc/init.d/S45firewall
+++ b/openwrt/target/default/target_skeleton/etc/init.d/S45firewall
@@ -1,4 +1,7 @@
 #!/bin/sh
 #!/bin/sh

+
+## Please make changes in /etc/firewall.user
+

 . /etc/functions.sh
 WAN=$(nvram get wan_ifname)
 LAN=$(nvram get lan_ifname)
 . /etc/functions.sh
 WAN=$(nvram get wan_ifname)
 LAN=$(nvram get lan_ifname)


@@ -25,15 +28,16 @@ iptables -t nat -N postrouting_rule
   iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
   iptables -A INPUT -p tcp --syn --tcp-option \! 2 -j  DROP
 
   iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
   iptables -A INPUT -p tcp --syn --tcp-option \! 2 -j  DROP
 

-  # allow
-  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

   #
   # insert accept rule or to jump to new accept-check table here
   #
   iptables -A INPUT -j input_rule
 
   #
   # insert accept rule or to jump to new accept-check table here
   #
   iptables -A INPUT -j input_rule
 

+  # allow
+  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
   # 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


@@ -46,13 +50,14 @@ iptables -t nat -N postrouting_rule
   iptables -A OUTPUT -m state --state INVALID -j DROP
   iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 
   iptables -A OUTPUT -m state --state INVALID -j DROP
   iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 

-  # allow
-  iptables -A OUTPUT -j ACCEPT         #allow everything out

   #
   # insert accept rule or to jump to new accept-check table here
   #
   iptables -A OUTPUT -j output_rule
 
   #
   # 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
   # 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


@@ -66,14 +71,15 @@ iptables -t nat -N postrouting_rule
   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
 
   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 -A FORWARD -i $LAN -o $WAN -j ACCEPT

   #
   # insert accept rule or to jump to new accept-check table here
   #
   iptables -A FORWARD -j forwarding_rule
 
   #
   # 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
+  iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT
+

   # reject (what to do with anything not allowed earlier)
   # uses the default -P DROP
 
   # reject (what to do with anything not allowed earlier)
   # uses the default -P DROP
 


@@ -83,4 +89,4 @@ iptables -t nat -N postrouting_rule
   iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE
 
 ## USER RULES
   iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE
 
 ## USER RULES

-. /etc/firewall.user
+[ -f /etc/firewall.user ] && . /etc/firewall.user