of the 23rd International
Conference on Distributed Computing Systems Workshops (ICDCSW??™03), May
An E?±cient Scheme for Authenticating Public
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Proc. of SCS Communication Networks and Distributed Systems Modeling and
Chapter 18
A Passive Approach to Unauthorized Sensor
Node Identification
Cherita Corbett1, John Copeland1, and Raheem Beyah2
1 Communications Systems Center
Georgia Institute of Technology
{cherita, jcopeland}@ece.gatech.edu
2 Department of Computer Science
rbeyah@cs.gsu.edu
1 Introduction
As access to power becomes less of a concern [4] (solar powered devices, wind
powered devices, longer battery life, AC), the desire for higher bandwidth communication,
and a desire for easy deployment, sensor networks are increasingly
using the 802.11 medium access control (MAC) protocol. Further, some sensor
deployment schemes [3] are heterogeneous, using smaller low-powered sensors
for tra?±c routing, but use higher-powered devices that use 802.11 to improve
overall performance of the network. Accordingly, in this chapter we discuss
security concerns that apply to sensor networks, but extend to any network
using the 802.11 MAC, including wireless local area networks (WLANs) and
ad hoc networks.
1.1 Security Concerns in 802.11 Networks
The shortcomings surrounding the security of 802.11 networks have been well
documented [20, 19]. Expectedly, there are automated tools [18] that exploit
these flaws to passively and actively attack wireless networks to gain unauthorized
access.
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