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Based on multi- source network security incidents Situation Assessment Research and Design

Author: XieWei
Tutor: NiuXinXin
School: Beijing University of Posts and Telecommunications
Course: Information Security
Keywords: Network security situation assessment Level Association AHP Security Event Fuzzy Clustering
CLC: TP393.08
Type: Master's thesis
Year: 2009
Downloads: 300
Quote: 4
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Abstract


With the rapid development of network technology, network security situation is increasingly grim. In order to ensure the internal network computer and network security, uptime, network management personnel in its internal network built up by the firewall, anti-virus gateways, intrusion detection systems, and many other safety equipment consisting of defense system. However, due to various safety equipment generates too many events and the state of network security assessment results are not uniform and is not a good solution to the overall security of the network status monitoring issue. Thus, originated in battlefield situational awareness of network security network security field in recent years become a focus of research questions. Network security situation assessment model belongs to the network security situation awareness is one of the core level, the research is how to extract the large-scale network security information, a comprehensive association analysis of the current situation of the overall security of cyberspace correct, effective assessment . The topic for the large number of network security incidents, a unified security situation is not easy to obtain knowledge of issues, and hopefully through the establishment of a more comprehensive security situation assessment model that in the specific network environment designed a practical assessment systems to network security management personnel more timeliness, more accurate knowledge of network security situation. This paper introduces network security situation assessment of the relevant background, concepts and research status, an overview of network security situation assessment, situation assessment systems, and other safety evaluation differences. Meanwhile, the situation assessment model throughout the situational awareness were positioned and pointed assessment models in situation assessment plays a key role. Subsequently, this paper presents the network security situation assessment studies conducted. Describes the assessment focuses on the data needed from the network of multi-source security events using fuzzy clustering is given to integration of the event handling method. This paper presents a detailed analysis of the level of elaborated relevance assessment model and fuzzy mathematics AHP and drill statistical fusion were introduced into the model weights critical value calculation and posture problems, the model can better Fitting all real network assets and the relationship between the services provided, to determine more granular security incidents affecting posture in cyberspace, providing a more accurate knowledge of the security situation. In addition, the model as well as good scalability and ease of maintenance, can be easily and effectively applied to actual network security situation assessment were to go. In this assessment model are given based on a real network security situation assessment system design, describes the situation assessment focuses on goal setting, hierarchical relational evaluation model based on AHP weight parameter calculation security events to determine the threat level, the required data evaluation system database storage design. Finally, this paper gives the network security situation assessment related to the achievement of the prototype system, highlighting the situation assessment model building, weight calculations and various security situation values ??of the implementation process.

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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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