| 摘要 |
The present invention aims to detect, among all subscribers to an Internet service network provided by internet service providers (ISPs), those who, using an IP router which converts IP addresses (such as NAP, an internet sharer or the like), attempt to multi-connect to a network in excess of the number of lines permitted for a given subscriber, where a plurality of client terminals attempting to the network share an identical public IP. To this end, the present invention provides: a method which detects the number of devices selected by a web server among a plurality of client terminals on private networks sharing an identical public IP address; and a system for selectively detecting the same devices, wherein the method: identifies devices of a plurality of client terminals sharing an identical public IP on private networks by using a detection/blockage webserver to which HTTP request messages of client terminals are redirected; sends, to the identified devices, HTTP request messages requiring for redirection back to the detection/blockage webserver as a dummy URL; and thus, when client terminals are redirected to the detection/blockage webserver, mirroring generated DNS request messages for the detection/blockage webserver so as to count the number of the mirrored DNS request messages and therefore detecting the number of the identified devices. |
