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authorFlorian Fainelli <florian@openwrt.org>2007-11-05 14:19:16 +0000
committerFlorian Fainelli <florian@openwrt.org>2007-11-05 14:19:16 +0000
commit9d7192e5fa1cdf91e6cd6fb127b5a2c4057531ba (patch)
treeee10bbaddfe7b2a348686026c3af758d7c1c1a82 /package/iptables
parent547984d91dfc1eb2e13ea941d67e4f181604702d (diff)
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Add a boolean to allow NAT from LAN or not, default to nat LAN (#2535)
SVN-Revision: 9503
Diffstat (limited to 'package/iptables')
-rwxr-xr-xpackage/iptables/files/firewall.init17
1 files changed, 12 insertions, 5 deletions
diff --git a/package/iptables/files/firewall.init b/package/iptables/files/firewall.init
index e1013fb8e7..204310af26 100755
--- a/package/iptables/files/firewall.init
+++ b/package/iptables/files/firewall.init
@@ -11,9 +11,13 @@ start() {
config_get WAN wan ifname
config_get WANDEV wan device
config_get LAN lan ifname
- config_get LAN_MASK lan netmask
- config_get LAN_IP lan ipaddr
- LAN_NET=$(/bin/ipcalc.sh $LAN_IP $LAN_MASK | grep NETWORK | cut -d= -f2)
+ config_get_bool NAT_LAN lan nat 1
+ if [ $NAT_LAN -ne 0 ]
+ then
+ config_get LAN_MASK lan netmask
+ config_get LAN_IP lan ipaddr
+ LAN_NET=$(/bin/ipcalc.sh $LAN_IP $LAN_MASK | grep NETWORK | cut -d= -f2)
+ fi
## CLEAR TABLES
for T in filter nat; do
@@ -108,8 +112,11 @@ start() {
iptables -t nat -A PREROUTING -j prerouting_rule
[ -z "$WAN" ] || iptables -t nat -A PREROUTING -i "$WAN" -j prerouting_wan
iptables -t nat -A POSTROUTING -j postrouting_rule
- ### Only LAN
- [ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src $LAN_NET/$LAN_MASK -o $WAN -j MASQUERADE
+ ### Only LAN, unless told not to
+ if [ $NAT_LAN -ne 0 ]
+ then
+ [ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src $LAN_NET/$LAN_MASK -o $WAN -j MASQUERADE
+ fi
iptables -t nat -A NEW -m limit --limit 50 --limit-burst 100 -j RETURN && \
iptables -t nat -A NEW -j DROP