Tumbinskaya M.V.Kazan National Technical Research Technical University named after A.N. Tupolev – KAI (KNRTU-KAI), Kazan, Republic of Tatarstan, Russian Federation tumbinskaya@inbox.ru ORCID id: not available
Subject The article analyzes to what extent the LTE Advanced networks are protected from the DoS attacks. Objectives The research attempts to detect and analyze vulnerable loops in the LTE security system, which is a modern means of communication. However, it is often exposed to some malpractices, such as DoS attacks. Methods The research discusses the specifics of Network Attached Storage access to Evolved UMTS Terrestrial Radio Access Network (E-UTRAN). We also describe two instances of the protocol being exposed to DoS attack through the Tracking Area Update procedure (TAU). Results We conducted an analysis of some exposures as part of E-UTRAN and TAU procedures and figured out what disrupted the service of TRACKINGAREAUPDATEREJECT warning system. Conclusions and Relevance Although LTE-A standard provides for some mechanisms to enhance the security of mobile communication, we actually detected an unprotected transfer of messages to launch DoS attacks. We also proved deficiencies in the network security system. The drawbacks can be eliminated with the system recovery timer, which disconnects mobile stations from the networks and notifies TAU procedure is denied throughout a protracted period of time. Afterwards mobile stations regain access to the network without disturbing other users.
Keywords: LTE-A, information security, tracking area update, DoS
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