Wireless Robust Security Network is 802.11i (Quality of service). Using the 2.4 GHz radio spectrum and 54 Mbps max data rate is 802.11g. Using the 5 GHz radio spectrum and 54 Mbps max data rate is 802.11a. Using the 2.4 GHz radio spectrum and 11 Mbps max data rate is 802.11b. In 1997IEEE 802.11 introduced standards for wireless local network (WLAN) communication, some of these standards are: The most attractive and fast growing network is 802.11 in wireless networks. Security in computer world determines the ability of the system to manage, protect and distribute sensitive information (Abdel-Karim R. One essential aspect for secure communications in next generation wireless network is that of cryptography, which the focus of this chapter is. There are many aspects to security and many applications, ranging from secure commerce and payments to private communications and protecting passwords. Does increased security provide comfort to paranoid people? Or does security provide some very basic protections that we are naive to believe that we don't need? During this time when the Internet provides essential communication between tens of millions of people and is being increasingly used as a tool for commerce, security becomes a tremendously important issue to deal with.
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