Based On Cloud Model Network Information System Survivability Assessment Methods

As we turn into network information society, network information systems are more important for people's normal life. Though traditional security can improve network information system's security, kinds of intrusions remain as before. Then, we must consider whether system can provide satisfied service when they have been intruded, and this is called survivability. Survivability should be considered beyond security for network information system.This paper discusses survivability of internet information system based on the basic theory and research methods of cloud model. We propose a new method that uses cloud model to evaluate the survivability of network information system.Firstly, we do study with the survivability of network information system, and get to know single factors which affect the survivability of network information system. Secondly, we establish appraisal standard cloud models for the single factor, and then establish actual cloud model according to data. Finally, compare the comparability between them and choose the right one, then complete the evaluation of survivability of network information system.