网络信息传输中对攻击快速防御仿真研究

Research on Fast Attack Defense Simulation in Network Information Transmission

对网络信息传输中对攻击的快速防御,能够有效保障在攻击下安全可靠地运行。对网络信息传输中攻击的防御,需要分析网络频谱特征进行攻击链路层漏洞检测,对网络入侵攻击进行量化评估,完成对攻击快速防御。传统方法对数据进行降维处理,组建支持向量机超球体模型,但忽略了对网络入侵攻击进行量化评估,导致防御效果不理想。提出基于安全威胁量化评估的网络信息传输中攻击防御方法。上述方法首先进行网络入侵攻击防御解析模型设计,对攻击下的链路漏洞数据进行双曲调频分解,分析链路漏洞层的慢变衰落特性,利用混叠谱模糊度函数分析网络频谱特征进行攻击链路层漏洞检测,对网络入侵攻击进行量化评估,组建网络入侵攻击防御收益与代价的量化评估指标体系,完成网络信息传输中攻击防御。仿真结果证明,所提方法网络攻击检测性能较好,展示了优越的安全防御价值。

Based on quantitative evaluation of security treat, an attack defense method in network information transmission is proposed. Firstly, an analytical model of the attack defense is designed and decomposition of hyper- bolic frequency modulation is carried out for link loophole data under attack. Then, fading characteristic of slow vari- ation of link loophole layer is analyzed and network spectrum signature is analyzed via ambiguous function of aliasing spectrum to detect loophole of the attack link layer. Moreover, quantitative evaluation is carried out for the network intrusion attack and index system of the quantitative evaluation between defense profit and cost is built. Finally, the attack defense is completed. Simulation results show that the method has good performance of the attack detection. It shows superior value of security defense.