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Hierarchical network threat situation assessment method for DDoS based on D-S evidence theory

机译：基于D-S证据理论的DDoS网络威胁状况分层评估方法

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摘要

In order to effectively evaluate the impact on network situation under DDoS attacks, this paper proposes a hierarchical network threat situation assessment method based on D-S evidence theory for DDoS. It is divided into the basic data acquisition layer, the metric indexes extraction layer, the device threat assessment layer and the threat situation assessment layer. Firstly, we calculate indexes that represent degrees of host resources consumption and qualities of network from the basic running data. Next, the D-S evidence theory is used to fuse above indexes, which assesses impact on the network of each device caused by DDoS attacks. Then, on the basis of service importance principle, we calculate the weight value of each device in the network. Furthermore, the threat situation value is obtained through weighted algorithm. Finally, experimental results show that the proposed method can vividly reflect the impact of DDoS attacks on the network security threat situation.
机译：为了有效地评估DDoS攻击对网络状况的影响，提出了一种基于D-S证据理论的DDoS分层网络威胁状况评估方法。它分为基本数据采集层，度量指标提取层，设备威胁评估层和威胁状况评估层。首先，我们从基本运行数据中计算出代表主机资源消耗程度和网络质量的指标。接下来，使用D-S证据理论融合以上指标，以评估DDoS攻击对每个设备网络的影响。然后，根据服务重要性原则，我们计算网络中每个设备的权重值。此外，通过加权算法获得威胁状况值。最后，实验结果表明，该方法可以生动地反映DDoS攻击对网络安全威胁情况的影响。

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