The Research And Application Of Security Authentication Based On 802.1x/EAP In Campus-WLAN

With the rapid growth of WLAN, the application of the wireless LAN is more and more extensive and the technology of the wireless LAN has got widely deployed in succession in many universities and colleges. While the rapid development of WLAN, security in network has put forward high demands too. Most WLAN based on 802.11 standard adopts WEP as security mechanism to guarantee the data security in the wireless LAN. For lack of taking the security problems into consideration at the time when WEP was designed, some security flaws are left behind in WEP. The rapid development of WLAN urges the exposure of the security flaws, resulting in WEP cannot meet the security requirement in WLAN.This paper has analysed security characters and security requirements of WLAN at first. Then we have studied the main security flaws existing in WEP. Finally we have further investigated IEEE protocols and principles such as 802.1x, EAP and WPA, and then based on IEEE 802.1x/EAP RADIUS technology, we put forward the improved scheme of the security problem of WLAN.