Investigation Of Security Issues Of Wimax Networks

Investigation of Security Issues in WiMAX Networks 1. Introduction Wired Systems are secure but being a wireless system, WiMAX has security vulnerabilities [1]. Security is of utmost concern in the real world and WiMAX was developed after the security failures were analyzed from IEEE 802.11 networks [2]. When the wireless network technology has a higher coverage area as high as in WiMAX, security becomes one of the most important issues. WiMAX, both mobile and fixed, has many attractive features such as connection-oriented MAC layer, provision of the QoS for different applications, efficient mobility, and power-saving features. Needless to say, all these attractive features must be protected against malicious activities by security mechanisms. The lowest layer i.e. PHY layer, is open to PHY layer attacks such as jamming and rushing. Jamming is done by introducing a source of strong noise to significantly lower the capacity of the channel, therefore, denying services to all stations. However, jamming is detectable with radio analyzer devices [3]. Rushing or scrambling is another type of jamming, but it takes place for a short interval of time aimed at particular frames. The PHY layer is not protected from being interfered or even catastrophic failures. So, it is essential to include technologies to secure PHY layer and higher layers for a converged routable network and devices within the system and thus follow a cross-layer approach. 2. Survey of RelevantShow MoreRelatedInstalling A Wireless Sensor Network Essay1747 Words   |  7 Pages INTRODUCTION A Wireless Sensor Network or WSN is supposed to be made up of a large number of sensors and at least one base station. The sensors are autonomous small devices with several constraints like the battery power, computation capacity, communication range and memory. 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