Practical Wi-Fi security overview

Wi-Fi is an abbreviation for wireless fidelity and is used to refer generically to any type of wireless network based on the IEEE 802.11 standard -- be that network 802.11b (an 11 Mbps technology, currently the most popular form of Wi-Fi), 802.11a (a 54 Mbps technology, a newer and emerging favorite), 802.11g (55 Mbps), or other formats.
An industry consortium known as the Wi-Fi Alliance, composed of leading wireless and equipment vendors whose mission is to certify 802.11 products for interoperability, makes sure that all equipment described as Wi-Fi can work together. This group seeks to create a global brand and identity for 802.11-based wireless LAN (local area network) products. All 802.11a, b, and g products can be called Wi-Fi, but only products that pass Wi-Fi alliance testing can label their products as "Wi-Fi Certified" (a registered trademark).
Wi-Fi offers users easy wireless network set-up, access, and use. But because the standard was designed with only limited security capabilities -- basically, to foil casual eavesdropping rather than more powerful forms of attack -- it's essential for managers and IT professionals alike to understand that Wi-Fi is subject to well-known and well-documented security vulnerabilities and weaknesses.
This IT guide covers basic Wi-Fi concepts and terminology and discusses how important security issues are for proper deployment and use of this powerful and flexible networking technology. The sections of this guide include following aspects ........

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