January 2006
Beginner
1120 pages
72h 31m
English
book
Handbook of Information Security, Volume 1, Key Concepts, Infrastructure, Standards, and Protocols
by Hossein Bidgoli
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IP Multicast and Its Security
Emilia Rosti, Università degli Studi di Milano, Italy
Introduction
IP Multicast
Addressing
Routing
Group Management
Reliable Multicast
Secure Multicast
Traffic Security
Group Security
Security Requirements
Key Management for Secure Multicast
Flat Schemes
Clustered Schemes
Tree-Based Schemes
Other Schemes
Conclusion
Glossary
Cross References
References
Further Reading
INTRODUCTION
IP multicast is an internetwork service that provides efficient delivery of data from one or more sources to a set of recipients, commonly known as a group (Deering, 1989). Examples of services that could take great advantage of multicast communication are live video/audio distribution (for example, videoconferencing and collaborative groupware), periodic data distribution (for example, software updates, newspaper/magazine distribution, and sport or stock quotes), Web server updates, pay-perview services (for example, video on demand), and distributed videogames.
The goal of multicast is to reduce sender transmission overhead, network bandwidth usage, and the latency observed by receivers. If only one IP multicast datagram, or packet as we interchangeably call it, containing, for example, video information, can be sent to multiple teleconference sites instead of one packet per site, network bandwidth is saved and time synchronization is closer to optimal. For this to be possible, special addresses and routing schemes must be devised. Group management protocols that define ...
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