NDLI: A dynamic quarantine scheme for controlling unresponsive TCP sessions

Content Provider	Springer Nature Link
Author	Yi, Sungwon Deng, Xidong Kesidis, George Das, Chita R.
Copyright Year	2008
Abstract	In addition to unresponsive UDP traffic, aggressive TCP flows pose a serious challenge to congestion control and stability of the future Internet. This paper considers the problem of dealing with such unresponsive TCP sessions that can be considered to collectively constitute a Denial-of-Service (DoS) attack on conforming TCP sessions. The proposed policing scheme, called HaDQ (HaTCh-based Dynamic Quarantine), is based on a recently proposed HaTCh mechanism, which accurately estimates the number of active flows without maintenance of per-flow states in a router. We augment HaTCh with a small Content Addressable Memory (CAM), called quarantine memory, to dynamically quarantine and penalize the unresponsive TCP flows. We exploit the advantage of the smaller, first-level cache of HaTCh for isolating and detecting the aggressive flows. The aggressive flows from the smaller cache are then moved to the quarantine memory and are precisely monitored for taking appropriate punitive action. While the proposed HaDQ technique is quite generic in that it can work with or without any AQM scheme, in this paper we have integrated HaDQ and an AQM scheme to compare it against some of the existing techniques. For this, we extend the HaTCh scheme to develop a complete AQM mechanism, called HRED.Simulation-based performance analysis indicates that by using a proper configuration of the monitoring period and the detection threshold, the proposed HaDQ scheme can achieve a low false drop rate (false positives) of less than 0.1%. Comparison with two AQM schemes (CHOKe and FRED), which were proposed for handling unresponsive UDP flows, shows that HaDQ is more effective in penalizing the bandwidth attackers and enforcing fairness between conforming and aggressive TCP flows.
Starting Page	169
Ending Page	189
Page Count	21
File Format	PDF
ISSN	10184864
Journal	Telecommunication Systems
Volume Number	37
Issue Number	4
e-ISSN	15729451
Language	English
Publisher	Springer US
Publisher Date	2008-04-19
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Active queue management Bandwidth sharing Denial-of-Service (DoS) attack TCP Unresponsive TCP Quality of service Probability Theory and Stochastic Processes Artificial Intelligence (incl. Robotics) Computer Communication Networks Business Information Systems
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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