Heimdhal: A History-Based Policy Engine For Grids

Heimdhal: A History-based Policy Engine for Grids Pedro Gama, Carlos Ribeiro, Paulo Ferreira INESC-ID/IST Distributed Systems Group Rua Alves Redol, no 9, 1000-029 Lisboa, Portugal [pedro.gama, carlos.ribeiro, paulo.ferreira]@inesc-id.pt plica— The arising of control grid platforms introduced inexpensive and highly available computing, entrepot and networking resources. Therefore, in a worldwide trend, institutions aggregate on virtual(prenominal) organizations, registering their resources to the grid and in return plan of attacking a virtually countless warehouse. This excess accepted the emergence of innovative application and business enterprise models, delivering the solution to some(prenominal) large-scale problems, as is the case of data processing, store and sacramental manduction in CERN’s Large Hadron Collider Project. In order to allow system administrators to ascertain resources are busy in a coordinated and secure way, policy mechanisms tak e in to cope with such(prenominal) new models and the increased complexity in resource tradition management. However, current grid platforms only permit simple primitives in their authorization modules. By restricting access control mechanisms to ACLs and rolebased models, they issue powerful usage semantics, such as those which are history-based (e.g. the chinese-wall surety policy).

This absence obliges the development of ad-hoc pledge managers for all(prenominal) deployed resource, introducing vulnerabilities in the security architecture. The use of advanced policies, and more(prenominal) specificall y historybased policies, provides a natural ! rule for expressing and enforcing several grid usage patterns, such as comme il faut resource consumption. Additionally, some policy concepts not usually put in policy engines, such as periodic reevaluation, assure an effective policy enforcement. We present the Heimdall system, a history-enabled policy engine which allows the definition, enforcement and accounting of history-based policies in Grid platforms, and more specifically...If you want to present a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper