Research On Access Control And Roaming Scheme Of Wireless LAN

At the beginning of the paper, WLAN is simply introduced, including developing history, classification, security and developing trend. The following is the introduction of standard document of IEEE 802.11 and IEEE 802. IX, and the simple analysis is shown to you. In the forth chapter, it is introduced that how to realize wireless terminal unites access control by windows 2000 DDK, and there are program codes. At last, the protocol of IAPP in the IEEE 802. IF and the switching model between areas realized by IAPP are introduced. In this paper, another switching model between areas, that is more effective, is put forward. To realize roam between LAN, mobile IP is used, and is also simply introduced. Tunnel technique, that is well-rounded method to realize mobile IP, is introduced, and then, by the shortage of tunnel technique, port mapping technique is put forward.