New Implementation of WLAN Security: Abstract: Compared with wired networks, wireless network security has the following four characteristics: (1) The channel is open and cannot prevent attackers from eavesdropping, maliciously modifying and forwarding; (2) The transmission medium - radio waves propagating in the air will cause signal attenuation due to various reasons (such as obstacles), resulting in information loss; (3) The equipment needs to be moved frequently (especially mobile users), and the equipment is easy to be lost or stolen; (4) Users do not have to actually connect to the network, making it easier for attackers to pretend to be legitimate users. Due to the above characteristics, the use of WLAN for communication must have a high communication confidentiality capability. Compared with existing security mechanisms, the Wireless LAN Authentication and Privacy Infrastructure (WAPI) has its unique advantages and fully reflects the advanced nature of national standards. With the rapid development of WLAN, the main factor restricting its development - security issues have also received more and more attention and general attention. On May 12, 2003, my country issued the national standard for wireless local area network (WLAN), which was scheduled to be enforced on December 1. An important component of this standard is the new security mechanism - Wireless LAN Authentication and Privacy Infrastructure (WAPI) formulated by the Broadband Wireless IP Standard Working Group. Compared with existing security mechanisms, WAPI has its unique advantages and fully reflects the advanced nature of national standards.
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