mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
24 lines
829 B
Bash
Executable File
24 lines
829 B
Bash
Executable File
#!/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
|