firewall: introduce drop_invalid option to allow disabling the invalid state match

[openwrt.git] / package / firewall / files / uci_firewall.sh

diff --git a/package/firewall/files/uci_firewall.sh b/package/firewall/files/uci_firewall.sh
index fd10899..f38bd6b 100755 (executable)
--- a/package/firewall/files/uci_firewall.sh
+++ b/package/firewall/files/uci_firewall.sh
@@ -159,16 +159,19 @@ fw_defaults() {
        $IPTABLES -t mangle -X
        $IPTABLES -t nat -X
        $IPTABLES -X
-       
-       $IPTABLES -A INPUT -m state --state INVALID -j DROP
+
+       config_get_bool drop_invalid $1 drop_invalid 1
+
+       [ "$drop_invalid" -gt 0 ] && {
+               $IPTABLES -A INPUT -m state --state INVALID -j DROP
+               $IPTABLES -A OUTPUT -m state --state INVALID -j DROP
+               $IPTABLES -A FORWARD -m state --state INVALID -j DROP
+       }
+
        $IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-               
-       $IPTABLES -A OUTPUT -m state --state INVALID -j DROP
        $IPTABLES -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-       
-       $IPTABLES -A FORWARD -m state --state INVALID -j DROP
        $IPTABLES -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-       
+
        $IPTABLES -A INPUT -i lo -j ACCEPT
        $IPTABLES -A OUTPUT -o lo -j ACCEPT