-# accept list of external ports
-$IPTABLES -A INPUT -i ${EXT_IF} -p tcp -m set --match-set allowed_tcp dst -j ACCEPT
-$IPTABLES -A INPUT -i ${EXT_IF} -p udp -m set --match-set allowed_udp dst -j ACCEPT
-$IP6TABLES -A INPUT -i ${EXT6_IF} -p tcp -m set --match-set allowed_tcp dst -j ACCEPT
-$IP6TABLES -A INPUT -i ${EXT6_IF} -p udp -m set --match-set allowed_udp dst -j ACCEPT