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Cloud is gaining popularity as means for saving cost of IT ownership and accelerating time to market due to ready-to-use, dynamically scalable computing infrastructure and software services offered on cloud on pay-per-use basis. Design of software solution for delivery as a shared service over cloud requires specific considerations. In this paper we describe an approach for design of travel reservations...
The potential benefits of business agility, flexibility, and reuse associated with SOA are well known today. However, these benefits do not come without a cost of their own, particularly regarding security. The primary goal to make Web services widely accessible can also make them vulnerable. This paper examines the key challenges for securing service-oriented environments and identifies the important...
Intrusion detection systems (IDSs) aim at detecting malicious or unauthorized activities targeting a network and its resources. Usually engineered as self-contained applications, current IDSs are limited in protecting collaborative computing environments, like grids, whose security amplifies the concerns about intrusions and motivates advanced organizing paradigms and technical solutions for effective...
Due to the increasing complexity of Web systems, security testing is becoming a critical activity to guarantee the respect of such systems to their security requirements. To challenge this issue, we rely in this paper on model based active testing. We first specify the Web system behavior using IF formalism. Second, we integrate security rules -modeled in Nomad language- within this IF model using...
The UNICORE grid system provides a seamless, secure and intuitive access to distributed grid resources. In recent years, UNICORE 5 is used as a well-tested grid middleware system in production grids (e.g. DEISA, D-Grid) and at many supercomputer centers world-wide. Beyond this production usage, UNICORE serves as a solid basis in many European and International research projects and business scenarios...
The Open Distributed Processing Reference Model (ODP-RM) provides viewpoints and abstract infrastructure guidelines that can be used for a basis for enterprise architecture, especially for an inter-enterprise architecture. The ODP-RM does not prescribe methodology for modeling itself, but provides common vocabulary and focus for description. This paper performs a brief analysis of the ODP-RM (and...
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