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Miladinovic, Igor; Stadler, Johannes – Internet Research, 2003
Introduces an extension of the Session Initiation Protocol (SIP) for closed multiparty conferences; the extension expands SIP for discovery of participant identities in a conference, and ensures that each participant is notified before a new participant joins. Verifies this extension by applying it to two SIP conference models. Concludes with an…
Descriptors: Computer Mediated Communication, Computer Networks, Computer Security, Computer System Design

Garofalakis, John; Kappos, Panagiotis; Makris, Christos – Internet Research, 2002
Considers the problem of improving the performance of Web access by proposing a reconstruction of the internal link structure of a Web site to match quality of the pages with popularity of the pages. Provides a set of simple algorithms for local reorganization of a Web site, which results in improving users' access to quality pages in an easy and…
Descriptors: Access to Information, Computer System Design, Electronic Text, Hypermedia

Evans, M. P.; Furnell, S. M. – Internet Research, 2000
Explains the background to experimental work intended to measure aspects of the World Wide Web, which inadvertently caused two perceived security breaches on remote systems. Describes the nature of these incidents and considers why, when over 700,000 addresses were sampled, only two sites considered the activity to be an attempt to breach their…
Descriptors: Computer Oriented Programs, Computer Security, Computer System Design, Internet

Sun, Wei-qiang; Li, Jin-sheng; Hong, Pei-lin – Internet Research, 2003
Multicasting is a necessity for a broadband metro-area-network; however security problems exist with current multicast protocols. A stateful multicast access control mechanism, based on MAPE, is proposed. The architecture of MAPE is discussed, as well as the states maintained and messages exchanged. The scheme is flexible and scalable. (Author/AEF)
Descriptors: Computer Mediated Communication, Computer Networks, Computer Security, Computer System Design