diff options
Diffstat (limited to 'package/base-files/default/etc/init.d/S45firewall')
| -rwxr-xr-x | package/base-files/default/etc/init.d/S45firewall | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/package/base-files/default/etc/init.d/S45firewall b/package/base-files/default/etc/init.d/S45firewall index 188b9aaa8a..c9986011ad 100755 --- a/package/base-files/default/etc/init.d/S45firewall +++ b/package/base-files/default/etc/init.d/S45firewall @@ -5,7 +5,8 @@ ${FAILSAFE:+exit} . /etc/functions.sh . /etc/network.overrides -[ -e /etc/config/network] && . /etc/config/network +[ -e /etc/config/network ] && . /etc/config/network + WAN=$(nvram get wan_ifname) LAN=$(nvram get lan_ifname) @@ -37,7 +38,7 @@ iptables -t nat -N postrouting_rule iptables -A INPUT -j input_rule # allow - iptables -A INPUT -i \! $WAN -j ACCEPT # allow from lan/wifi interfaces + iptables -A INPUT ${WAN:+-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 @@ -81,7 +82,7 @@ iptables -t nat -N postrouting_rule # allow iptables -A FORWARD -i br0 -o br0 -j ACCEPT - iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT + [ -z "$WAN" ] || iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT # reject (what to do with anything not allowed earlier) # uses the default -P DROP @@ -89,7 +90,7 @@ iptables -t nat -N postrouting_rule ### MASQ iptables -t nat -A PREROUTING -j prerouting_rule iptables -t nat -A POSTROUTING -j postrouting_rule - iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE + [ -z "$WAN" ] || iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE ## USER RULES [ -f /etc/firewall.user ] && . /etc/firewall.user |