Patent ID: 8295255
Filing Date: 2012-10-23
Classification: H04K,H04W

Abstract:
1. An access point detecting device connected to a wired LAN (Local Area Network) and communicating with a wireless LAN terminal, comprising: an access point detector for monitoring the wireless space surrounding the access point detecting device, and obtaining identification information of a first access point device, and storing the identification information in an access point memory: a scanning data transmitter for transmitting an access point scanning data: the access point scanning data being passed through the wired LAN, and then through a wireless channel connected to the first access point device identified by the identification information stored in the access point memory, and received by the access point detecting device, or through the wireless channel connected to the first access point device identified by the identification information stored in the access point memory, and then through the wired LAN, and received by the access point detecting device, information indicating that the first access point device on a route through which the access point scanning data has returned is a legitimate device being stored in the access point memory; and a wireless data communication processor for recognizing that the access point device for which the identification information is stored in the access point memory, but information indicating a legitimate device is not stored, as a rogue access point; wherein the access point determines a period at which the rogue access point transmits beacon signal; setting the period in a timer so that the timer generates timings at which the rogue access point is expected to transmit the beacon signals; and wherein the access point creates interfering data and wirelessly transmits the interfering data at said timings, the interfering data transmitted at a transmitting power normally used for transmitting communication data, or at a higher power, and the interfering data is transmitted for a duration longer than the duration of the rogue access point's beacon signal.