With the continuous development of campus net and sharp increase of customer's amount, the safety problems of network gradually get outstanding day by day. IP address conflict and illegal equipment entering often happens to the teachers, students and family members' when they connect the Internet. Especially the recent appearances of ARP cheat seriously influent the stable run of the campus net. With the background of North China Electric Power University campus network, this paper compiled the Telnet agreement by use of the software of DELPHI7.0 to achieve the centralized control and automatic collocation of the campus connection level exchanger. Also it can manage and statistic the user's information and send messages automatically to users who become due with GSM Modem which lightened the teacher's work strength, increased the work efficiency and management accuracy. |