Study Of Security Defense Technology On Campus Network

With the popularity of the Internet and the development of the network in various universities, most colleges and universities have set up their own campus network, which has become an important part of the information system in the universities and colleges. Just as the Internet, there are various security problems existed in campus network. In the early stage, because of security awareness, security management and other aspects, network security was not paid sufficient attention, which caused network security incidents continue to occur, and made the campus network security at great risk. With the advancing and promotion of digital campus construction, how to build a reliable campus network security system has become a significant problem.This paper introduces the concept of network security, discuss the threat of the security that the campus network faces, study the related technologies of the campus network security, analyze the OSI Security Architecture, the common Dynamic security model and the active defense technology, and raise the "active defense based on the dynamic model of the campus network security". The model is a dynamic network security model covering the entire campus with all-round, multi-level, multiple means of active defense. Under the guidance of this model, to use the related technologies of network security and to establish the campus network security system are the fundamental solution to the threat of the network security from the internal and external network. It will work for the teaching information systems, administration, information exchanges of Hanshan Normal University to provide a safe environment.The paper is structured by the following six aspects of the campus network security technology and its application for research and study:Firstly, summary and analyze the international and domestic network security technology research and developing direction;Secondly, elaborate on the concept of network security and the understanding of network security research and its structure;Thirdly, discuss campus network security threats and the requirements of building network security in digital campus;Fourthly, study campus network security-related technology, and focus on analysis of the cryptographic techniques, authentication technology, firewall, intrusion detection technology, access control and virtual private network technology;Fifthly, Compare and analyze the common dynamic network security system model and active defense technology, discuss how to build the active defense based on the dynamic campus network security model;Sixthly, discuss and analyze the current campus network of Hanshan Normal University through the physical layer, network layer, system layer and application layer and so on, and according to the "active defense based on the dynamic campus network security model", propose the solutions to Network Security in Hanshan Normal University Campus and how to gradually put into effect.