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A Research on Temporal Multi-layer and Multi-dimensional Alert Correlation for Expert System
Author: WangZuoXia
Tutor: JiaYan
School: National University of Defense Science and Technology
Course: Computer Science and Technology
Keywords: Alert Correlation Expert System Time Stream Multi-layer
CLC: TP393.08
Type: Master's thesis
Year: 2011
Downloads: 25
Quote: 0
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Abstract
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With the development of the network and a wide range of applications, the dependence on the network of society is gradually increasing. Network security events and network security crime have restricted the economic development of China. On this context, the birth of the intrusion detection system(IDS) happened. Combining the correlation analysis with traditional expert systems, is an development of intrusion detection technology.It puts forward a research on temporal multi-layer and multi-dimensional alert correlation for expert system, to solve the problem that there are high false alarm rate and missed alarm rate existing in IDS. It presents abstraction modeling for knowledge base, match rules exclusive rules, and reasoning arithmetic. The system has been applied in real condition, and the results of experiments show that the system can effectively advance the performance of correlation analysis, and can easily extend.This method is modeling for hierarchical knowledge base in order to improve performance, adding asset allocation and vulnerability information analysis module, removing information not needed to reduce overhead, and pruning operation to reduce redundant overhead. Add time stream analysis mechanism based on time window to meet the real-time requirements.The results of experiments show that the system can effectively advance the performance of correlation analysis, and can easily extend. The advantages are procedures and high data independence, good data structure, abstract level, easy expansion, easy to use and low redundancy.
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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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