Application-level distributed denial of service prevention in a replicated system

This paper presents the design and implementation of DFQ (Distributed Fair Queueing), a distributed system for defending a replicated set of HTTP servers against application-level distributed denial of service (DDoS) attacks. By using a modification of weighted fair queueing, all clients are guaranteed a fair share of the servers. no matter how many or which servers they connect to. DFQ continues to provide fair service even against malicious clients who are able to spoof additional IP addresses. It is also capable of accommodating HTTP proxies, which regularly provide many times more traffic than a single host. Such properties are desirable for package management servers and the like, whose responsiveness in the presence of flash crowds and malicious attackers is paramount to the security of the overall system.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2007

Author dc:creator

• Vandiver, Alexander M

Advisor dc:contributor.advisor

• Hari Balakrishnan.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/46463

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/46463