RT - Journal Article T1 - DDoS Traffic Modeling, Identification and Attack Mitigation to Cloud Hosted servers by Drift plus Penalty methods JF - ITRC YR - 2016 JO - ITRC VO - 8 IS - 2 UR - http://ijict.itrc.ac.ir/article-1-67-en.html SP - 15 EP - 21 K1 - DDoS generated traffic modeling K1 - Cloud computing K1 - Drift plus penalty K1 - Drift plus extended penalty K1 - Dynamic resource allocation AB - During DDoS attack to a cloud hosted server, to counter the attack, more resources should be assigned to it. In this paper we first develop a mathematical formula for input packet rate during DDoS attack, and propose a method to identify the botnet that created the attack. We introduce two algorithms for resource assignments to protect cloud hosted servers. The drift plus penalty algorithm minimizes the average cost of resource assignment, and stabilizes the queue size. The modified version of this algorithm is drift plus extended penalty, which minimizes the average cost and compensate penalty function by considering delay. LA eng UL http://ijict.itrc.ac.ir/article-1-67-en.html M3 ER -