This paper proposes an effective detection method against SYN flooding attack.The analysis is started from the traits of SYN flooding attack.In every time period,the semi-connected list of server is counted.The number of unacknowledged segments is calculated.The statistical sequence based on time comes into being with the method of compensation.An improved PCUSUM algorithm is used to detect attack.Experimental result shows that the algorithm can detect attack quickly and obtain lower false-positive rate tha...
1概述分布式拒绝服务(Distributed Denial of Servlce,DDoS)攻击指借助于客户/服务器技术,将多个计算机联合起来作为攻击平台,对一个或多个目标发动DoS攻击。文献[1]指出超过94%的DDoS攻击基于TCP攻击方式,UDP攻击约占2%,ICMP攻击约占2%。其中基于TCP的攻击方式最重要的是SYN泛