Abstract: A wireless network security system with a plurality of communication terminals including an Access Point (AP) and a station is provided. The wireless network security system includes a plurality of sensor devices for collecting identification information of the communication terminals, and a WIPS server communicating with the sensor devices, for transmitting a control signal to the communication terminals, wherein the WIPS server transmits the control signal to the plurality of communication terminals through the sensor devices, and when a control signal for blocking connection of two or more communication terminals among the plurality of communication terminals associated through a network is transmitted, connection blockage packets different from one another is created and sequentially and repeatedly transmitted.

Abstract: A mobile certificate issue server, system, and method are provided. The mobile certificate issue server includes a certificate generation part for generating a certificate using a public key included in certificate issue request information received from a user terminal, an e-mail sending part for sending the certificate to an e-mail address accessible to the mobile terminal of a user, and a server-side certificate conversion part for converting the certificate into information having a recognition format capable of being recognized by the mobile terminal Here, the e-mail sending part sends the certificate through e-mail in an attachment form. The e-mail sending part stores the information having the recognition format in a file form, inserts the file into the e-mail as an attachment file, and sends the e-mail to the e-mail address accessible to the mobile terminal of the user.

Abstract: A wireless network security system with a plurality of communication terminals including an Access Point (AP) and a station is provided. The wireless network security system includes a plurality of sensor devices for collecting identification information of the communication terminals, and a WIPS server communicating with the sensor devices, for transmitting a control signal to the communication terminals, wherein the WIPS server transmits the control signal to the plurality of communication terminals through the sensor devices, and when a control signal for blocking connection of two or more communication terminals among the plurality of communication terminals associated through a network is transmitted, connection blockage packets different from one another is created and sequentially and repeatedly transmitted.