Design And Implementation Of Multi Level Security Defense System In Institutions Of College

With the increase of the size of the institutions of higher learning network users,network threats to the development of technology have risen substantially, more and more network security threat, technology threat also showed intelligent, hide for longer, stronger ability to destroy, the traditional network security technology has been unable to meet the people's needs, need to use with a warning, protection and the ability to fight back multi-level active security defense system, improve the performance of network security defense.Firstly, This thesis detailed analysis of the network security research background,describes the research status of network security defense at home and abroad,summarizes the existing problems, and puts forward the solution and ideas. Secondly,this thesis analyzes the college multi-level network security defense system in the process of technology, namely VPN technology, ROST technology, VLAN technology,RAID technology, HSRP technology and NAT technology, the effective guarantee of the colleges and universities build dynamic, multi-level, high strength security defense system. Then, according to the needs of the network security defense management analysis, and derived the relevant business logic function, respectively is related to system configuration management function, user management, security management function, network monitoring function, network operation log management function, network operation management function, the design and research services, from the security information access server security management services, network virus defense service, service, multi link network reliability design of network design export services, to further improve the performance of network security management, to meet the needs of network security defense. Again, this thesis aims at the design of multi-level security defense system, to build a powerful network security defense capability, and design a network security defense design ideas, from many aspects to construct the network security defense functions, each function of the algorithm design process, has an important role and significance. Then,the thesis designs a security defense system is a multi-level and dynamic, given the IP address planning content related to the use of redundancy, IP SEC, firewall and active defense technology provides a comprehensive defense system, improve the network security defense ability. Finally, experiments and tests for the multi-level network security defense system, the system performance is verified from many aspects, can satisfy the automation management, multi-level network security defense universityintelligent configuration requirements, improve the performance of network security defense.Institutions of higher learning multi level security and defense system can timely response security threats demand, improve the defense capability of the online security, meet the modern university collaborative office demand, improve school of information security defense performance has an important role and significance.