====== SYN Flood 攻擊的基本原理及防禦  ======
http://www.study-area.org/tips/syn_flood.htm

作者﹕shotgun

====== DoS与DDos攻击工具基本技术及其发展 ======
http://security.ccidnet.com/art/1099/20060316/481369_1.html

====== How to Prevent Denial of Service Attacks ======
http://learn-networking.com/network-security/how-to-prevent-denial-of-service-attacks