Research And Realization Of The Campus Network Authentication System

In order to make a better use of the school access net equipment,this article mainly discusses the problems existing in the process of using the equipment. It focuses its study on the certicification work of the equipment, including currently popular access certification systmes,namely, Raduis, 802.1x and Huawei.With the principle of low cost, high efficiency and high reliability, the applying method of Freeradius under Linux and access equipment cooperation is analyzed here.As the study develops, the application of the certicifying in school is discussed as well .At the same time, the certicification of radio network is tested and proved to be quite effective.The method of this study is to compare the safety and usability of the access method of VPN under Windows, 802.1x, with the certicifying method of Radius under WinRadius and Linux, deciding on a scheme of perfect performance, which results in an access solution of PPPoE based on Linux.The system of this scheme is designed and operated in this study as well.In operating the system, the terms on PPPoE are given more detailed explaination, with a focus on its possible safety problems and their solutions.Some technology like how to use VLAN to reduce the broadcast domain of the access to lan is introduced.As for charging system, some of the source codes of freeRadius are revised.By adding custom SQL statement, MAC binding and online statistics are realised. In the meanwhile, the certification system uner Wondows is programmed.In the last part of this study, WEB management platform is designed and net access shared testing technology is analysed concerning the operational requirements.