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To assure secure access to any computer resources one must provide an adequate level of authentication, authorization job isolation and possibility of auditing user actions. In the grid environment that comprises a large number of users and resources in different administrative domains, these features are challenging. Grid economy and accounting related to it are becoming more and more important in an emerging aspect of grid commercialization. Also, the requirements of the users and administrators are becoming more and more sophisticated: checkpointing and migration of jobs, detailed software requirements, quality of service, collaborative work, and load balancing, to name a few. Virtualization techniques, nowadays more and more matured and advanced, seem to help solve the above-mentioned problems. In the present paper we discuss some of these techniques as well as existing solutions and then propose a framework for Virtual Environments. The framework focuses on resource access control, but the benefits of virtualization are wider.

Virtual Environments - Framework for Virtualized Resource Access in the Grid