Abstract
Broadband networks based on the asynchronous transfer mode (ATM) are emerging rapidly. Both the technological component in terms of ATM infrastructure, as well as the area of applications requiring Quality of Services (QoS) by the means of bandwidth or delay constraints are covered by a variety of projects and products. However, given the increasing interest in applications such as governmental communication, transmission of medical information, or commercial applications, the necessity of providing secure means of delivering sensitive contents is apparent.In this paper, we focus on security services in ATM networks. The variety of different approaches and solutions are categorised by the means of its common and distinct functionality, as well as certain advantages and disadvantages are discussed. In addition, the standardisation efforts by the leading group in that area—the ATM Forum—are outlined. Finally, the essentials of the project SCAN3 are given, resulting in a comprehensive solution to security services in ATM networks.Key wordsATM securityATM confidentialityKey agile encryption
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