An academic research paper on DDoS detection including attack simulation based on TFN2K, detection platform and analysis. [Requires PowerPoint] http://comnet.technion.ac.il/~cn2w03/
Shawn P. McCarthy provides a quick overview of various kinds of Distributed Denial of Service (DDoS) attacks. He also explains why defending against this type of attack requires upstream infrastructure providers to cooperate with the victim. http://www.gcn.com/vol20_no17/news/4573-1.html