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Prevention of Selective Jamming Attacks by Using Packet Hiding Methods


V.Jyothi, U. Vidya Sagar, S. Ramesh Kumar


Vol. 14  No. 9  pp. 56-59


The open nature of the wireless medium leaves it too weak to intentional interference attacks, typically defined as jamming. This intentional interference with wireless transmissions can be used as a launch pad for mounting Denial-of-Service attacks on wireless networks. Typically, jamming has been introduced under an external threat model. However, intruders with internal knowledge of protocol speci?cations and network secrets can launch low-effort jamming attacks that are difficult to detect and counter. In this work, we address the problem of selective jamming attacks in wireless networks. In these attacks, the hacker is active only for a short period of time, selectively targeting messages of high importance. We demonstrate the advantages of selective jamming in terms of network performance degradation and hacker effort by presenting two case studies, a selective attack on TCP and one on routing. We show that selective jamming attacks can be forwarded by performing real-time packet classi?cation at the physical layer. To reduce these attacks, we develop three schemes that prevent real-time packet classi?cation by combining cryptographic primitives with physical-layer attributes. We analyze the security of the proposed methods and evaluate their computational and communication overhead


Jamming Attacks,Packet Hiding Methods