【作者】 彭祺；

【导师】 李力； 邓群辉；

【作者基本信息】 南昌大学 ， 计算机技术， 2007， 硕士

【摘要】 随着无线局域网的迅速发展，无线局域网的应用越来越广泛，各大院校的校园网建设也相继引进了无线局域网技术。无线网络的迅速发展的同时，对网络的安全性也提出了更高的要求。目前基于802.11标准的无线局域网主要使用WEP安全机制来确保无线局域网中的数据安全。由于设计时缺乏对安全问题的全面考虑，WEP存在着安全缺陷。随着无线局域网的迅速发展，这些问题逐渐暴露出来，导致WEP已经无法满足无线局域网中的安全需求。本文首先分析了无线网络应用中的安全特性和需求，然后分析研究了WEP协议存在主要安全缺陷，在深入研究了IEEE 802.1x、EAP、WPA协议及其工作原理的基础上，提出了一个基于IEEE 802.1x／EAP+RADIUS技术的无线校园网安全认证问题的解决方案。更多还原

【Abstract】 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.更多还原