An application level video gateway
Proceedings of the third ACM international conference on Multimedia
Concast: Design and Implementation of a New Network Service
ICNP '99 Proceedings of the Seventh Annual International Conference on Network Protocols
A Prototype Framework for Providing Hop-by-Hop Security in an Experimentally Deployed Active Network
DANCE '02 Proceedings of the 2002 DARPA Active Networks Conference and Exposition
Safety and security of programmable network infrastructures
IEEE Communications Magazine
Concast: design and implementation of an active network service
IEEE Journal on Selected Areas in Communications
The SwitchWare active network architecture
IEEE Network: The Magazine of Global Internetworking
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Concast is a customizable many-to-one network-layer communication service. Although programmable services like concast can improve the efficiency of group applications, accompanying security concerns must be addressed before they are likely to be deployed. The problem of securing such services is interesting because conventional end-to-end security mechanisms are not applicable when messages are processed inside the network, and also because of the potential for interaction among the various policies involved. In this paper we describe our implementation of a secure concast service, which leverages existing network-level security mechanisms (IPsec) to provide secure distribution of program code (merge specifications) as well as authentication of participating nodes. We describe the various policies supported, how they interact, and how our approach provides security against various attacks.