2026-09-20T11:33:44Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/464632022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Hari Balakrishnan.
Vandiver, Alexander M
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2009-08-26T16:29:01Z
2009-08-26T16:29:01Z
2007
2007
http://hdl.handle.net/1721.1/46463
374599942
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.
Includes bibliographical references (p. 35-38).
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.
by Alexander M. Vandiver.
M.Eng.
38 p.
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
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http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
Application-level distributed denial of service prevention in a replicated system
Application-level DDoS prevention in a replicated system
Thesis
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Publication
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<Abstract>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.</Abstract>
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