分布式拒绝服务攻击及防范研究

Research on Distributed Denial of Service Attacks and Defense

拒绝服务攻击(Denial of Service,DoS)是网络上最常见的一种攻击方式,其攻击类型繁多、影响广泛,其中的分布式拒绝服务攻击(D istributed Denial of Service,DDoS)更是严重威胁网络安全,受到这种攻击的损失是无法计量的。系统地分析了分布式拒绝服务攻击的攻击原理和攻击类型,通过研究各个DDoS攻击程序提出相应的防御方法。

Denial of Service（DoS） is one of the most popular attack type on Internet, which has various attack methods and makes extensive influence. DoS, especially Distributed Denial of Service （DDoS） brings a very serious threat to the security of the Internet. The losing was immeasurable while under such attack. The paper analyses the theory and types of the DDoS and gives the defense mechanisms against specifically DDoS.