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Authentication, Authorization, Admission, and Accounting for QoS Applications

  • Carlos Rabadão
  • Edmundo Monteiro
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3262)

Abstract

The main objective of the IETF Differentiated Services (DiffServ) model is to allow the support on the Internet of different levels of service to different sessions and information flows, aggregated in a few number of traffic classes. The flow classification is supported by some of the IP packet header fields. This approach shows some security limitations that are inherent to the DiffServ model. Being the edge routers (ER) the responsible for the admission and marking of packets, according to the class of service, they are the most vulnerable element to attacks. A security hole in ERs could be propagated to the entire domain, compromising the QoS of all the domain flows. To overcome these limitations, this paper proposes an architecture for Authentication, Authorization, Admission control and Accounting (AAAA) of QoS client applications with dynamic identification of sessions and flows. The proposal functionalities are described and analyzed in some detail, focusing the main modules and message exchange among modules. The paper ends with the discussion of the main advantages of the proposal over existing solutions.

Keywords

Admission Control Resource Reservation Edge Router Resource Request Reservation Request 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Carlos Rabadão
    • 1
    • 2
  • Edmundo Monteiro
    • 2
  1. 1.Superior School of Technology and Management Polytechnic Institute of LeiriaLeiriaPortugal
  2. 2.Laboratory of Communications and Telematics CISUC / DEIUniversity of CoimbraCoimbraPortugal

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