基于Petri网的网络攻击流模型研究

针对网络攻击的智能组织实施问题,提出一种攻击流的概念,选用Petri网作为工具,对网络攻击流进行建模。在此基础上,对3种基本网络攻击流模型进行分析,并结合IP欺骗攻击实例,分析其在IP欺骗攻击中的具体应用及其实现方式。实验结果表明,该模型既利于攻击者构建网络攻击方案,又能被计算机解析并组织实施网络攻击。

智能电表的安全需求与策略分析

智能电表是高级测量体系(AMI)的重要基础,而高级测量体系又是智能电网的重要组成部分。通过对智能电表的各种信息安全问题的探讨,对由互联网用户合法权益遭到威胁和侵害而引发的安全问题进行了思考,介绍了智能电表中存在的安全隐患和安全需求。采用基于数据加密(DES)、RSA公钥加密算法加密数据,实现身份认证等通信方案来保证数据通信的安全性,以确保用户和供电企业双方的利益。

AN INTELLIGENT METHOD FOR REAL-TIME DETECTION OF DDOS ATTACK BASED ON FUZZY LOGIC

The paper puts forward a variance-time plots method based on slide-window mechanism tocalculate the Hurst parameter to detect Distribute Denial of Service(DDoS)attack in real time.Basedon fuzzy logic technology that can adjust itself dynamically under the fuzzy rules,an intelligent DDoSjudgment mechanism is designed.This new method calculates the Hurst parameter quickly and detectsDDoS attack in real time.Through comparing the detecting technologies based on statistics andfeature-packet respectively under different experiments,it is found that the new method can identifythe change of the Hurst parameter resulting from DDoS attack traffic with different intensities,andintelligently judge DDoS attack self-adaptively in real time.