关键词: 态势分析, 网络评估, 服务可用性, DDOS攻击

Abstract: The increasing use of the Internet and attacks make it necessary to develop techniques that analyze network and service availability.Monitoring and quantifying network component behavior is key to make network reliable and robust. By using situation analysis,this paper proposes an approach to network service availability evaluation which is aimed at certain systems.The contribution of this paper is two-fold: First,key-factors and secondly,the system.This approach can provide a direct situation analysis to the certain services and can also analyze the system resource usage,thus havs a concrete and whole scope of the system situation.The effectiveness of this approach is approved by the large amounts of experiments in both normal and DDOS attacked network.

Key words: situation analysis, network evaluation, service availability, DDOS attack