In order to improve the quality of teaching and scientific research, accelerating the school's informatization process, develop the multimedia teaching and research as well as the current campus network faces many problems and network security technology and management.
This paper introduces the design of several typical campus network model and network construction involved in network technology, the three layer switching technology, the VLAN division. In data flow analysis to solve the system data demand and the security of the campus network, campus network security, threat of campus network security factors, the use of firewalls, routers, switches, servers and other network infrastructure builds a database logical structure and physical structure, and a multi-level security function security model. Realization of security middleware system, user permissions, log management and database encryption function, to meet the modern needs of vocational college education informatization.
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