+fw_custom_chains() {
+ $IPTABLES -N input_rule
+ $IPTABLES -N output_rule
+ $IPTABLES -N forward_rule
+ $IPTABLES -N prerouting_rule -t nat
+ $IPTABLES -N postrouting_rule -t nat
+ $IPTABLES -A INPUT -j input_rule
+ $IPTABLES -A OUTPUT -j output_rule
+ $IPTABLES -A FORWARD -j forward_rule
+ $IPTABLES -A PREROUTING -t nat -j prerouting_rule
+ $IPTABLES -A POSTROUTING -t nat -j postrouting_rule
+}
+