... this paper, we survey the state-of-the-art approaches to providing security for three popular wireless networking paradigms, namely, IEEE 802.11 based WLANs, third-generation cellular networks, and mobile ad hoc networks. We identify the security threats as well as examine the current solutions. We further summarize lessons learned, discuss open issues, and identify future research directions.

My research interest is in the design, implementation, and performance evaluation of wireless networks and its security mechanisms. Wireless networks are becoming more and more dynamic in its scale, mobility, and diversity of technologies. I have focused on “studying the impact of dynamics on wireless network system and design methods for support of reliability, performance, and security. ” Especially, I have been interested in building systems that achieve both security and performance and understanding trade-off between them. My approach is to decentralize system functionalities to distributed entities to achieve reliability and efficiency without sacrificing security. Centralized approaches for the design of systems and security mechanisms fail to satisfy new system needs spurred by the dynamics of wireless networks. Although decentralization can effectively adapt the system to dynamic environments, the benefit of decentralization comes with price. One of my research question is what is the price of decentralization and how it trade-offs with benefit.