diff options
Diffstat (limited to 'openwrt/target/default/target_skeleton/etc/init.d/S45firewall')
| -rwxr-xr-x | openwrt/target/default/target_skeleton/etc/init.d/S45firewall | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/openwrt/target/default/target_skeleton/etc/init.d/S45firewall b/openwrt/target/default/target_skeleton/etc/init.d/S45firewall new file mode 100755 index 0000000000..49b9df0004 --- /dev/null +++ b/openwrt/target/default/target_skeleton/etc/init.d/S45firewall @@ -0,0 +1,23 @@ +#!/bin/sh +. /etc/functions.sh + +WAN=$(nvram get wan_ifname) + +IPT=/usr/sbin/iptables + +for T in filter nat mangle ; do + $IPT -t $T -F + $IPT -t $T -X +done + +$IPT -t filter -A INPUT -m state --state INVALID -j DROP +$IPT -t filter -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT +$IPT -t filter -A INPUT -p icmp -j ACCEPT +$IPT -t filter -A INPUT -i $WAN -p tcp -j REJECT --reject-with tcp-reset +$IPT -t filter -A INPUT -i $WAN -j REJECT --reject-with icmp-port-unreachable +$IPT -t filter -A FORWARD -m state --state INVALID -j DROP +$IPT -t filter -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT +$IPT -t filter -A FORWARD -i $WAN -m state --state NEW,INVALID -j DROP +$IPT -t filter -A FORWARD -o $WAN -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu + +$IPT -t nat -A POSTROUTING -o $WAN -j MASQUERADE |