Distributed Denial Of Service Attacks

Distributed Denial Of Service Attacks

by Eric Chan-Tin


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Distributed Denial of Service (DDoS) attacks are attempts to overwhelm a computer system in order to deny access by legitimate users. They are generally unstoppable, but there is a good deal of on-going research on methods to reduce their negative effects.
This paper will deal with the design of a model that simulates such an attack. The simulation model is then used to study possible ways to defend against these attacks. Three experiments are run: 1) using a priority queue to sort messages from clients based on how many connections they have open on the server; 2)
limiting the number of connections each client can create; and 3) having the server forcefully delete the oldest established connection, whenever its connection table becomes full. Results show that method 1 is totally ineffective while method 2
somewhat improves the overall performance of the system. However, method 3, combined with method 2,
produces significantly improved performance against a
DDoS attack.

Product Details

ISBN-13: 9783639179521
Publisher: VDM Verlag
Publication date: 07/15/2009
Pages: 88
Product dimensions: 0.21(w) x 6.00(h) x 9.00(d)

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