Method for local positioning of the node violating information security in mobile networks intrusion detection systems

This article discusses a method for determining the location (local positioning) of a mobile node violating information security in a mobile data transmission system in a controlled area or in limited volumes of closed spaces inside buildings, rooms, tunnels, mines, with an unlimited and constantly changing number of mobile nodes. This method is used in the intrusion detection system and is passive, which implies the absence of information exchange between sensor nodes and the intruder node. To determine the location of the intruder node we use only the indications of the sensor nodes from the intrusion detection system stating their location and the received signal levels of the intruder node at the sensor nodes. The authors provide experimental results of the mobile node local positioning achieved with the help of the proposed method in open areas and inside the building using the example of mobile Wi-Fi network nodes. The authors believe that the proposed technical solutions can accurately position the intruder node in real time, which increases the security of the mobile network generally, as well as improves the quality of the parameters for information exchange, including the integrity and availability of the transmitted data.