System Design Based on the Combination of Firewall and Intrusion Detection TechnologyYANG Qiong1,YANG Jian-hua2,WANG Xi-ping3,MA Bin4 (1.Library, Wuhan University of Technology, Wuhan 430070,China;2.Security Office, Wuhan University of Technology, Wuhan 430070,China;3.Jianghan Petroleum Administration, Qianjiang 433100,China;4.Center of Network, Wuhan University of Technology, Wuhan 430070,China)Internet has been widely applied in every field. Digital library was becoming an important medium of global resource sharing. This paper raised an issue of network information safety which were being concerned about, analyzed the deficiency in firewall technology widely applied, explains the system design to guarantee the network security through the combination of firewall technology and intrusion detection technology.firewall; security of network information; intrusion detection; system design