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FRAC: Implementing Role-Based Access Control for Network File Systems
- Source :
- NCA
- Publication Year :
- 2007
- Publisher :
- IEEE, 2007.
-
Abstract
- We present FRAC, a Framework for role-based access control in network file systems. FRAC is a reference monitor that controls the message flow between file system clients and servers. FRAC supports role hierarchies, user sessions, and static and dynamic separation of duty constraints. It also allows administrators to define dynamic policies based on access history and the environment, e.g., time of day. FRAC introduces a virtual control namespace (VCN) that provides an interface to query and update the state of the access control framework over the standard file system protocol. This namespace eliminates the need for executing specialized user agents either at the client or at the server. Therefore, FRAC does not require any modification to either the file system client or the file server. We have implemented FRAC for the widely deployed NFS protocol using FileWall, a file system proxy previously developed by us. Our experimental evaluation shows that FRAC imposes minimal overheads for the common file system operations.
- Subjects :
- File system
Computer science
Computer file
Stub file
Device file
computer.software_genre
Unix file types
Virtual file system
Self-certifying File System
File server
Server
Data_FILES
Operating system
Network File System
Versioning file system
SSH File Transfer Protocol
Global Namespace
Distributed File System
computer
File system fragmentation
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Sixth IEEE International Symposium on Network Computing and Applications (NCA 2007)
- Accession number :
- edsair.doi...........b9e4ca8e9f984724f91f741ca7e15800