REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

WLAN-BASED INTRUSION DETECTION

milan bjelica

University of Belgrade, School of Electrical Engineering (ETF), Belgrade, Serbia, milan@etf.rs

nadica miljković

University of Belgrade, School of Electrical Engineering (ETF), Belgrade, Serbia, nadica.miljkovic@etf.rs

mirjana simić-pejović

University of Belgrade, School of Electrical Engineering (ETF), Belgrade, Serbia, mira@etf.rs

Abstract: We describe a system that monitors changes in ubiquitous WLAN signals to detect an intrusion, i.e. determine whether the area of interest is empty or not, and demonstrate its feasibility. To the best of our knowledge, this system is the first of its kind in Serbia.

Keywords: Channel state information, IEEE 802.11n, intrusion detection, WiFi, WLAN.