tailieunhanh - Báo cáo hóa học: " ZSBT: A Novel Algorithm for Tracing DoS Attackers in MANETs"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: ZSBT: A Novel Algorithm for Tracing DoS Attackers in MANETs | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2006 Article ID 96157 Pages 1-9 DOI WCN 2006 96157 ZSBT A Novel Algorithm for Tracing DoS Attackers in MANETs Xin Jin 1 Yaoxue Zhang 1 Yi Pan 2 and Yuezhi Zhou1 1 Department of Computer Science and Technology Tsinghua University Beijing 100084 China 2 Department of Computer Science Georgia State University University Plaza Atlanta GA 30303 USA Received 24 August 2005 Revised 15 March 2006 Accepted 3 April 2006 Denial of service DoS attack is a major class of security threats today. They consume resources of remote hosts or network and make them deny or degrade services for legitimate users. Compared with traditional Internet the resources such as bandwidth memory and battery power of each node are more limited in mobile ad hoc networks MANETs . Therefore nodes in MANETs are more vulnerable to DoS attacks. Moreover attackers in MANETs cannot only use IP spoofing to conceal their real identities but also move arbitrarily which makes it a challenging task to trace a remote attacker in MANETs. In this paper we proposed a zone sampling-based traceback ZSBT algorithm for tracing DoS attackers in MANETs. In our algorithm when a node forwards a packet the node writes its zone ID into the packet with a probability. After receiving these packets the victim can reconstruct the path between the attacker and itself. Simulations were carried out to illustrate the validity of the algorithm even with a little communication overhead. Copyright 2006 Xin Jin et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION A MANET is a collection of mobile nodes that establish communication paths dynamically. Nodes may join a network at any time and communicate with the entire network via neighboring nodes. In recent