X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/90335cdd41957de7a859232df826cc2bdfc4f3b3..934e35c9dc1f189fe6714edd7d3f05d6918e07ba:/target/default/target_skeleton/etc/init.d/S45firewall

diff --git a/target/default/target_skeleton/etc/init.d/S45firewall b/target/default/target_skeleton/etc/init.d/S45firewall
index da9fd550f..51c35b03a 100755
--- a/target/default/target_skeleton/etc/init.d/S45firewall
+++ b/target/default/target_skeleton/etc/init.d/S45firewall
@@ -1,7 +1,8 @@
 #!/bin/sh
+${FAILSAFE:+return}
 . /etc/functions.sh
-export WAN=$(nvram get wan_ifname)
-export LAN=$(nvram get lan_ifname)
+WAN=$(nvram get wan_ifname)
+LAN=$(nvram get lan_ifname)
 
 ## CLEAR TABLES
 for T in filter nat mangle; do
@@ -16,9 +17,17 @@ iptables -N forwarding_rule
 iptables -t nat -N prerouting_rule
 iptables -t nat -N postrouting_rule
 
+### Allow SSH from WAN
+# iptables -t nat -A prerouting_rule -i $WAN -p tcp --dport 22 -j ACCEPT 
+# iptables        -A input_rule      -i $WAN -p tcp --dport 22 -j ACCEPT
+
 ### Port forwarding
-# iptables -t nat -A prerouting_rule -p tcp --dport 22 -j DNAT --to 192.168.1.2
-# iptables        -A forwarding_rule -p tcp --dport 22 -d 192.168.1.2 -j ACCEPT
+# iptables -t nat -A prerouting_rule -i $WAN -p tcp --dport 22 -j DNAT --to 192.168.1.2
+# iptables        -A forwarding_rule -i $WAN -p tcp --dport 22 -d 192.168.1.2 -j ACCEPT
+
+### DMZ (should be placed after port forwarding / accept rules)
+# iptables -t nat -A prerouting_rule -i $WAN -j DNAT --to 192.168.1.2
+# iptables        -A forwarding_rule -i $WAN -d 192.168.1.2 -j ACCEPT
 
 ### INPUT
 ###  (connections with the router as destination)
@@ -27,18 +36,18 @@ iptables -t nat -N postrouting_rule
   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 --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 47 -j ACCEPT		# allow GRE
+  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
 
   # reject (what to do with anything not allowed earlier)
-  iptables -A INPUT -p tcp --syn --tcp-option \! 2 -j  DROP
   iptables -A INPUT -p tcp -j REJECT --reject-with tcp-reset
   iptables -A INPUT -j REJECT --reject-with icmp-port-unreachable