Networking Investigate

Group-Based Security in a Federated File System

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Executive Summary

The SILENUS federated file system was developed by the SORCER research group at Texas Tech University. The distributed file system with its dynamic nature does not require any configuration by the end users and system administrators. Managing security in a metacomputing system is a new challenge. It must be ensured that every user has a valid authentication and authorization to view, modify, and create files in the system spread across many heterogeneous computers that to individual requestor, it looks and acts like a single computer. User management is a must be on a metacomputing system and scale well. Existing user credential databases must be incorporated as secure data services if present. In this paper a new scalable authentication model for federated file systems is described.

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