iptables -d -D for destination / delete

http://phorum.study-area.org/index.php?topic=22912.0
http://www.linuxquestions.org/questions/linux-networking-3/iptables-to-destination-muliple-ip-port-43946/


iptables -D INPUT x <------ x=該行的line-number
如何知道line-number的值 ----> iptables -nL --line-numbers