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COPS: Quality of Service vs. Any Service at All

Randy KatzContact Information, George PorterContact Information, Scott ShenkerContact Information, Ion StoicaContact Information and Mel TsaiContact Information

(1)  637 Soda Hall, CS Division, EECS Department, University of California, Berkeley, CA 94270, USA
Abstract
Todays networks are awash in illegitimate traffic: port scans, propagating worms, and illegal peer-to-peer transfers of materials [8]. This ldquonoiserdquo has created such a crescendo that legitimate traffic is starved for network resources. Essential network services, like DNS and remote file systems, are rendered unavailable. The challenge is no longer ldquoquality of servicerdquo but rather ldquoany service at allrdquo. Techniques must be developed to identify and segregate traffic into good, bad, and suspicious classes. Quality of Service should now protect the good, block the bad, and slow the ugly when the network is under stress of high resource utilization. We discuss the research challenges and outline a possible architectural approach: COPS (Checking, Observing, and Protecting Services). It is founded on ldquoInspection-and-Action Boxesrdquo (iBoxes) and packet annotations. The former are middlebox network elements able to inspect packets deeply while performing filtering, shaping, and labelling actions upon them. The latter is a new layer between routing and transport that tags packets for control purposes while also providing an in-band control plane for managing iBoxes across a network.

Contact Information Randy Katz
Email: randy@cs.berkeley.edu
URL: http://www.cs.berkeley.edu/~randy

Contact Information George Porter
Email: gporter@cs.berkeley.edu
URL: http://www.cs.berkeley.edu/~randy

Contact Information Scott Shenker
Email: shenker@cs.berkeley.edu
URL: http://www.cs.berkeley.edu/~randy

Contact Information Ion Stoica
Email: istoica@cs.berkeley.edu
URL: http://www.cs.berkeley.edu/~randy

Contact Information Mel Tsai
Email: mtsai@cs.berkeley.edu
URL: http://www.cs.berkeley.edu/~randy
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