Abstract: Traditional network management systems only solve the problem of charge. Combining with the actual situation of campus network and laboratory management, using Socket as communication control, C# and SQL Server 2000 as development tools to facilitate the teachers and students as the basic starting point, this paper develops a set of experiment automatic start-up, experiment teaching workload statistics, after-school free computer billing, automatic reminder before class, locking the machine in the integration of humane teaching management system.

Key words: Socket, broadcast, duplexing MD5, Winlogon, DLL injection, monitoring program, password download