Showing papers by "Vassilis Prevelakis published in 1999"

A secure station for network monitoring and control

Abstract: The task of managing large networks is seldom accomplished using a single tool. Instead, network administrators usually compile collections of tools that can be used, in isolation or combined with others, to identify and correct problems. Equally important, however, is the platform used for the execution of those tools. In this paper we will be describing the Network Monitoring Station which has provided us with a safe base from which to troubleshoot network problems. This platform combines strong security with reduced configuration, administration and maintenance overheads. Moreover, it employs free, off-the-shelf software and runs on low-cost PCs.

A Secure Station for Network Monitoring and Control

Abstract: The task of managing large networks is seldom accomplished using a single tool. Instead, network administrators usually compile collections of tools that can be used, in isolation or combined with others, to identify and correct problems. Equally important, however, is the platform used for the execution of those tools. In this paper we will be describing the Network Monitoring Station which has provided us with a safe base from which to troubleshoot network problems. This platform combines strong security with reduced configuration, administration and maintenance overheads. Moreover, it employs free, off-the-shelf software and runs on low-cost PCs.

Managing large WWW sites

Abstract: The trend towards ever‐larger WWW sites with hundreds of thousands of pages maintained by teams of developers has made apparent the need for tools to manage such large‐scale efforts. In this paper we present a mechanism for organising and manipulating groups of nodes and links in WWW sites. These constructs are used to create dynamic views of the data in a given site according to various organisational and presentational criteria. Moreover, proven techniques for the management of hypertext networks (e.g. versioning, variants, etc.) can be readily implemented through the use of this model. Additionally, the model allows the creation of user views through the combination of these constructs via a number of operations. After the description of our model we present a prototype system developed at the University of Geneva that demonstrates how the mechanisms included in our model can be integrated into an existing http server. We then examine how the same mechanisms can be employed in the management of large WWW sites.

Controlling the dissemination of electronic documents

Abstract: The wide use of data networks encourages the exchange of electronic documents. However, this practice often has unwanted side-effects such as unauthorised copying, redistribution or modification of these documents. Moreover, the recipient usually has no convenient means of confirming the authenticity of the document, while the sender has no proof of receipt. In this paper we present the major requirements for the commercialisation of electronic information and describe an agent-based framework for the exchange of arbitrary electronic documents over open networks.