wireless ad hoc networking

Chapter 21
Security Issues in an
Integrated Cellular
Network—WLAN and
MANET
Bin Xie, Anup Kumar, and Dharma P. Agrawal
21.1 Introduction
It is widely recognized that many new wireless technologies have been
introduced to cater the ever-growing demands for diversified services. 1 Various
fast-growing services provided by different networks include voice,
multimedia, messaging, e-mail, information services (e.g., news, stocks,
weather, and travel), M-commerce, entertainment, location-based public
utility and health-care services, and so on. A multiinterface mobile device
may allow a user to access the Internet by a WLAN interface for a data
service (e.g., checking e-mail, news, and even a multimedia service). In
addition, by using the same device, the user may simultaneously start
another application, such as receiving a call from its cellular interface. While
wireless networks are becoming ubiquitous, integration of ad hoc network
devices with the Internet is the fundamental to providing mobile users with
Internet accessibility anytime and everywhere, with quality of service (QoS)
and security guarantees. 2
Wireless LANs (e.g., IEEE 802.11a/b/e/g and HiperLAN/2), MANs (e.g.,
IEEE 802.16), and WANs (e.g., 1G, 2G, 2.5G, 3G, GSM, and the proposed
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