| Along with the quick development of internet and the thorough of informative process, life style, study and the work of people are occuring huge change, efficiency rises considerably, information resource gets furthest share. Changefulness and the complexity of network environment, as well as the frailty of information system, have decided the objective existence of network safe threat. The economic losses brought with network attack is also serious, this makes people have to aggravate the more regard the research for network safe defence system and corresponding technology.Now, static security defense system has been hard to meet new network environment, may adapt the network security theory (or called dynamic information security theory) to emerge as the times require.PPDR model is the major model that may adapt the network security theory, includes 4 parts mainly: Policy, Protection, Detection and Response. It uses detection tool under guidance and the control of overall safe strategy, while synthesizing with various protection tools to know and evaluate systematic safe state , adjusts system to" be most safe" and the state of" risk minimum ".This article according to may adapt the network security theory, the utilization systems engineering thought, devotes in the Jiangxi Province Ganzhou City country tax bureau network information system safety control question research, main research work as follows:1.To the PPDR dynamic security model, the information system safety control frame, the security system structure has carried on the widespread analysis and the research;2.To the Ganzhou national tax information system from physical safety, network safety,systematic safety, application safety as well as safe management 5 aspects carry out all-around analysis, make clear reason and the risk of the existence of information system, according to security goal analysis concrete security requirements;3.The research designs the Ganzhou City country tax bureau information system... |
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