The present disclosure relates to a method for blocking the connection of an electronic device inside a wireless intrusion prevention system, the method comprising the steps of: successively monitoring wireless frames in a plurality of channels through a first communication module; generating a first blocking message on the basis of at least one wireless frame received as a result of the monitoring and generating a second blocking message on the basis of a first wireless frame, to which a predetermined wireless network technology has been applied, among the at least one wireless frame; and transmitting at least one of the first and second blocking messages through a second communication module. The present disclosure is not limited to the above embodiment, and other embodiments are also possible.