A jamming approach to enhance enterprise Wi-Fi secrecy through spatial access control

Yu Seung Kim, Patrick Tague, Heejo Lee, Hyogon Kim

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Prevalent Wi-Fi networks have adopted various protections to prevent eavesdropping caused by the intrinsic shared nature of wireless medium. However, many of them are based on pre-shared secret incurring key management costs, and are still vulnerable from practical countermeasures. In this study, we investigate the feasibility of using defensive jamming technique to protect enterprise Wi-Fi networks from potential eavesdroppers. This non-cryptographic approach requires neither any pre-shared key or high deployment costs. Defensive jammers geographically confine the wireless coverage of Wi-Fi access point, and thus block the message reception outside an arbitrary boundary at a physical layer. We provide a theoretical model fine tuning the jamming parameters for jammer placement. We then discuss practical considerations including optimized jammer arrangement algorithms, interference countermeasures to legitimate communications, and countermeasures against advanced attackers.

Original languageEnglish
Pages (from-to)2631-2647
Number of pages17
JournalWireless Networks
Issue number8
Publication statusPublished - 2015 Nov 1

Bibliographical note

Publisher Copyright:
© 2015, Springer Science+Business Media New York.


  • Defensive jamming
  • Eavesdropping
  • Wi-Fi networks

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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