diff options
Diffstat (limited to 'package/iptables')
| -rw-r--r-- | package/iptables/files/firewall.awk | 24 | ||||
| -rwxr-xr-x | package/iptables/files/firewall.init | 8 | ||||
| -rw-r--r-- | package/iptables/files/firewall.user | 22 |
3 files changed, 25 insertions, 29 deletions
diff --git a/package/iptables/files/firewall.awk b/package/iptables/files/firewall.awk index 902c7b1..31dbae0 100644 --- a/package/iptables/files/firewall.awk +++ b/package/iptables/files/firewall.awk @@ -1,20 +1,6 @@ # Copyright (C) 2006 OpenWrt.org BEGIN { - print "ifname=\"$WAN\"" - print "[ -z \"$ifname\" ] && exit" - print "" - print "iptables -X input_$ifname 2>&- >&-" - print "iptables -N input_$ifname" - print "iptables -X forward_$ifname 2>&- >&-" - print "iptables -N forward_$ifname" - print "iptables -t nat -X prerouting_$ifname 2>&- >&-" - print "iptables -t nat -N prerouting_$ifname" - print "" - print "iptables -A input_rule -i \"$ifname\" -j input_$ifname" - print "iptables -A forwarding_rule -i \"$ifname\" -j forward_$ifname" - print "iptables -t nat -A prerouting_rule -i \"$ifname\" -j prerouting_$ifname" - print "" FS=":" } @@ -32,15 +18,15 @@ BEGIN { ($1 == "accept") { target = " -j ACCEPT" for (o in _opt) { - print "iptables -t nat -A prerouting_$ifname" _opt[o] str2ipt($2) target - print "iptables -A input_$ifname " _opt[o] str2ipt($2) target + print "iptables -t nat -A prerouting_wan" _opt[o] str2ipt($2) target + print "iptables -A input_wan " _opt[o] str2ipt($2) target print "" } } ($1 == "drop") { for (o in _opt) { - print "iptables -t nat -A prerouting_$ifname" _opt[o] str2ipt($2) " -j DROP" + print "iptables -t nat -A prerouting_wan" _opt[o] str2ipt($2) " -j DROP" print "" } } @@ -57,8 +43,8 @@ BEGIN { else fwopts = "" } for (o in _opt) { - print "iptables -t nat -A prerouting_$ifname" _opt[o] str2ipt($2) target - print "iptables -A forward_$ifname " _opt[o] " -d " $3 fwopts " -j ACCEPT" + print "iptables -t nat -A prerouting_wan" _opt[o] str2ipt($2) target + print "iptables -A forwarding_wan " _opt[o] " -d " $3 fwopts " -j ACCEPT" print "" } } diff --git a/package/iptables/files/firewall.init b/package/iptables/files/firewall.init index 6f1ba8b..a4014f3 100755 --- a/package/iptables/files/firewall.init +++ b/package/iptables/files/firewall.init @@ -18,10 +18,13 @@ start() { done iptables -N input_rule + iptables -N input_wan iptables -N output_rule iptables -N forwarding_rule + iptables -N forwarding_wan iptables -t nat -N prerouting_rule + iptables -t nat -N prerouting_wan iptables -t nat -N postrouting_rule iptables -N LAN_ACCEPT @@ -42,6 +45,7 @@ start() { # insert accept rule or to jump to new accept-check table here # iptables -A INPUT -j input_rule + [ -z "$WAN" ] || iptables -A INPUT -i $WAN -j input_wan # allow iptables -A INPUT -j LAN_ACCEPT # allow from lan/wifi interfaces @@ -85,6 +89,7 @@ start() { # insert accept rule or to jump to new accept-check table here # iptables -A FORWARD -j forwarding_rule + [ -z "$WAN" ] || iptables -A FORWARD -i $WAN -j forwarding_wan # allow iptables -A FORWARD -i $LAN -o $LAN -j ACCEPT @@ -95,6 +100,7 @@ start() { ### MASQ iptables -t nat -A PREROUTING -j prerouting_rule + [ -z "$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 @@ -111,8 +117,10 @@ 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 } diff --git a/package/iptables/files/firewall.user b/package/iptables/files/firewall.user index 5f295ba..f4eb18e 100644 --- a/package/iptables/files/firewall.user +++ b/package/iptables/files/firewall.user @@ -7,22 +7,24 @@ iptables -F forwarding_rule iptables -t nat -F prerouting_rule iptables -t nat -F postrouting_rule -### BIG FAT DISCLAIMER -## The "-i $WAN" is used to match packets that come in via the $WAN interface. -## it WILL NOT MATCH packets sent from the $WAN ip address -- you won't be able -## to see the effects from within the LAN. +# The following chains are for traffic directed at the IP of the +# WAN interface + +iptables -F input_wan +iptables -F forwarding_wan +iptables -t nat -F prerouting_wan ### Open port to WAN ## -- This allows port 22 to be answered by (dropbear on) the router -# 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 +# iptables -t nat -A prerouting_wan -p tcp --dport 22 -j ACCEPT +# iptables -A input_wan -p tcp --dport 22 -j ACCEPT ### Port forwarding ## -- This forwards port 8080 on the WAN to port 80 on 192.168.1.2 -# iptables -t nat -A prerouting_rule -i $WAN -p tcp --dport 8080 -j DNAT --to 192.168.1.2:80 -# iptables -A forwarding_rule -i $WAN -p tcp --dport 80 -d 192.168.1.2 -j ACCEPT +# iptables -t nat -A prerouting_wan -p tcp --dport 8080 -j DNAT --to 192.168.1.2:80 +# iptables -A forwarding_wan -p tcp --dport 80 -d 192.168.1.2 -j ACCEPT ### DMZ ## -- Connections to ports not handled above will be forwarded to 192.168.1.2 -# 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 +# iptables -t nat -A prerouting_wan -j DNAT --to 192.168.1.2 +# iptables -A forwarding_wan -d 192.168.1.2 -j ACCEPT |