Affiliations: Research Center of Computer Network and Information
Security Technology, Harbin Institute of Technology, Harbin 150001, China | Computer Science Department, University of Houston,
Houston, TX 77204, USA
Abstract: Distributed denial of service (DDoS) is a major threat to the
availability of Internet services. As one of the most difficult problems in
network security, it has received considerable attention from the mass media
and the research community. In this paper, we design an effective and practical
countermeasure which allows a general-purpose TCP-based public server to
sustain high availability even during severe DDoS attacks. A novel
microeconomic framework based on Generalized Vickrey auction (GVA) is proposed.
By adopting this mechanism, not only the availability of services is improved,
but also the total utility of legitimate clients can be maximized. Initial
simulations have shown that this mechanism is highly effective in
preferentially dropping attacker traffic over legitimate client traffic, and
the protected server can remain operational under various system loads and
severely attacked conditions. The results indicate that it is a promising
approach to countering DDoS attacks.