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Uncovering global icebergs in distributed monitors

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4 Author(s)
Guanyao Huang ; Dept. of Electr. & Comput. Eng., Univ. of California, Davis, CA, USA ; Lall, A. ; Chuah, Chen-Nee ; Jun Xu

Security is becoming an increasingly important QoS parameter for which network providers should provision. We focus on monitoring and detecting one type of network event, which is important for a number of security applications such as DDoS attack mitigation and worm detection, called distributed global icebergs. While previous work has concentrated on measuring local heavy-hitters using ldquosketchesrdquo in the non-distributed streaming case or icebergs in the non-streaming distributed case, we focus on measuring icebergs from distributed streams. Since an iceberg may be ldquohiddenrdquo by being distributed across many different streams, we combine a sampling component with local sketches to catch such cases. We provide a taxonomy of the existing sketches and perform a thorough study of the strengths and weaknesses of each of them, as well as the interactions between the different components, using both real and synthetic Internet trace data. Our combination of sketching and sampling is simple yet efficient in detecting global icebergs.

Published in:

Quality of Service, 2009. IWQoS. 17th International Workshop on

Date of Conference:

13-15 July 2009