Bas van Oudenaarde

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A new resource abstraction called Path is introduced in the framework of resource reservation for the optimization of user applications. A network Path is allocated in an on-demand fashion using a number of different signaling methods and is built using a chain of Path Elements that may belong to different administrative domains. Three different(More)
The paper presents proposed Security Architecture for Open Col-laborative Environment (OCE) being developed in the framework of the Col-laboratory.nl (CNL) project with the intent to build a flexible, customer-driven security infrastructure for open collaborative applications. The architecture is based on extended use of emerging Web Services and Grid(More)
For data intensive Grid applications, such as shown at iGrid2002, users may require short-lived guaranteed high bandwidth connections. These types of connections, providing a certain Quality of Service (QoS) will need to be authorized and provisioned, often through multiple administrative domains. We present a case study of a Bandwidth on Demand service(More)
The paper provides an overview of available web applications and Web Services security vulnerability models and proposes a classification of the potential Grid and Web Services attacks and vulnerabilities. This is further used to introduce a security model for interacting Grid and Web Services that illustrates how basic security services should interact to(More)
Many Grid applications require high bandwidth end-to-end connections between Grid resources in different domains. Fiber optic networks, owned by different providers, have to cooperate in a coordinated manner in order to provide an end-to-end connection. Currently, multi-domain optical network solutions require paper-based long-term contracts between(More)
This paper describes the design and development of a flexible, customer driven, security infrastructure for Open Collaborative Environments. The experiences were gained within the framework of the Collaboratory.nl project. The work is based on extended use of emerging Web Services and Grid security technologies, combined with concepts from the generic(More)
Optical or lambda exchanges have emerged to interconnect networks, providing dynamic switching capabilities on OSI layer 1 and layer 2. So far, the only inter-domain dynamics have occurred on layer 3, the IP layer. This new functionality in the data plane has consequences on the control plane. We explain this by comparing optical exchanges with current(More)
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