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WPA/WPA2

WPA

The IEEE 802.11 working group’s first concern was to offer a possible replacement for cellwide common preshard keys. The second concern was to increase the encryption security by finding a replacement for WEP. Both tasks were assigned to the 802.11i working group. But developing an amendment to the protocol takes time, and the industry, with the boom of wireless networks and WEP weaknesses, could not wait. This is why, in 2003, the Wi-Fi Alliance decided to publish a certification for vendors implementing a better scheme than WEP, called WPA (Wi-Fi Protected Access). WPA was based on draft version 3 of the 802.11i amendment. WPA offers two authentication mechanisms:

• An Enterprise mode using 802.1X/EAP, as explained earlier and implying individual user authentication through a RADIUS server)


  

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