Changes between Version 12 and Version 13 of Internal/Rbac


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Timestamp:
Sep 25, 2006, 7:28:55 PM (18 years ago)
Author:
hedinger
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  • Internal/Rbac

    v12 v13  
    11[[TOC(Internal/Rbac,Internal/Rbac/OrbitRbacLevels,Internal/Rbac/OrbitRbacDesign,Internal/Rbac/LdapResources,Internal/Rbac/RbacResources)]]
    22== Role-Based Access Control ==
    3 In normal, scheduled operation, ORBIT is designed to insure that each person using an ORBIT resource is allowed to do so at that time.  The Lightweight Directory Access Protocol (LDAP) is used by ORBIT to ''authenticate'' each user's password when he or she logs into an ORBIT controller or server.  LDAP authentication and the proper use of ORBIT user id's and passwords allows each user id to be related to a single human user.  A single person may have one or more ORBIT user id's.  Each ORBIT user id may be logged into one or more sessions, and during each session there may well be multiple computer processes initiated by the user.  A ''process'' is an instance of a user running an application program like a spreadsheet, editor or browser.
     3Role-Based Access Control (RBAC) will be used by ORBIT to ''control'' each user's ''access'' to ORBIT resources based on his or her ''role''.  RBAC promises simpler administration of access control than maintaining access control lists for each resource.  It enables an organization to enforce separation of duty, the principle of least privilege and timely revocation of trust.  Because it is based on a formal model, a given an assignment of users to roles may be checked for consistency with the organization's security design goals.
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    5 Role-Based Access Control (RBAC) will be used by ORBIT to ''control'' each user's ''access'' to ORBIT resources based on his or her ''role''.  To explain this use of roles, first some terminology.  When a user runs an application program that process acts on behalf of the user and is referred to as a ''subject''.  An ''object'' is any resource accessible on a computer system, including peripherals, files, databases, and fields in a database.  An ''operation'' is an active part of a process invoked by the subject process much like a function call or a method invocation.  In general, a ''permission'' or privilege is the authorization to perform some action on the system.  In RBAC, a permission is the authorization to perform a given operation on a given object.  The use of roles to control access is based on the observation that there may be thousands of users in a given organization, but there are fewer than a hundred different roles they act in at any given time to access resources.  Users are assigned to one or more roles.  Each role has a defined set of permissions, each permission either allowing or disallowing an operation invoked by a subject process run by a user acting in that role to access a given object.
     5To explain RBAC's specific use of roles, first some terminology.  In normal, scheduled operation, ORBIT is designed to insure that each person using an ORBIT resource is allowed to do so at that time.  The Lightweight Directory Access Protocol (LDAP) is used by ORBIT to ''authenticate'' each user's password when he or she logs into an ORBIT controller or server.  LDAP authentication and the proper use of ORBIT user id's and passwords allows each user id to be related to a single human user although a single person may have one or more ORBIT user id's.  Each ORBIT user id may be logged into one or more sessions, and during each session there may well be multiple computer processes initiated by the user.  A ''process'' is an instance of a user running an application program like a spreadsheet, editor or browser.
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    7 RBAC promises simpler administration of access control than access control lists.  It enables an organization to enforce separation of duty, the principle of least privilege and timely revocation of trust.  Because it is based on a formal model, a given an assignment of users to roles may be checked for consistency with security design goals.
     7When a user runs an application program that process acts on behalf of the user and is referred to as a ''subject''.  An ''object'' is any resource accessible on a computer system, including peripherals, files, databases, and fields in a database.  ORBIT objects include the grid, sandboxes, ORBIT databases, and noise generator.  An ''operation'' is an active part of a process invoked by the subject process much like a function call or a method invocation.  In general, a ''permission'' or privilege is the authorization to perform some action on the system.  In RBAC, a permission is the authorization to perform a given operation on a given object.  The use of roles to control access is based on the observation that there may be thousands of users in a given organization, but there are fewer than a hundred different roles they act in at any given time to access resources.  Users are assigned to one or more roles.  Each role has a defined set of permissions, each permission either allowing or disallowing an operation invoked by a subject process run by a user acting in that role to access a given object.
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    9 Two special constraints are needed with role-based access control for ORBIT.  A primary goal of ORBIT's is to insure each users has access to data and results only for their project.  Second, use of the grid is scheduled and its access control has to be integrated with the ORBIT grid scheduler.
     9Two special constraints are needed with role-based access control for ORBIT.  A primary goal of ORBIT's is to insure each user has access to data and results only for his or her project(s).  Second, use of the grid and sandboxes is scheduled and control of access to each of them has to be integrated with the ORBIT scheduler.
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    1111As with any access control mechanism, role-based access control will have some performance penalties.  Role-based access control should provide sufficiently flexible control with acceptable performance for reasonable administrative cost.  In ORBIT, role-based access control will be implemented using mechanisms provided by LDAP.  It is expected that this implementation will have acceptable performance while providing the desired security.
    1212
    13 The rest of the wiki pages for the ORBIT Role-Based Access Control project are organized as follows.  The [wiki:Internal/Rbac/OrbitRbacLevels RBAC Reference Model] page briefly describes the core, hiearchical, static separation of duty and dynamic separation of duty components of the RBAC specification.  The [wiki:Internal/Rbac/OrbitRbacDesign ORBIT RBAC Design] page and its subsidiary pages contain design issues and decisions.  The [wiki:Internal/Rbac/LdapResources LDAP Resources] and [wiki:Internal/Rbac/RbacResources RBAC Resources] pages each briefly describe important sources then give a fairly comprehensive list of references.  All of the bracketed wiki references like  [[http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/ANSI+INCITS+359-2004.pdf Ame04]] are on the [wiki:Internal/Rbac/RbacResources RBAC Resources] page.
     13The rest of the wiki pages for the ORBIT Role-Based Access Control project are organized as follows.  The [wiki:Internal/Rbac/OrbitRbacLevels RBAC Reference Model] page briefly describes the core, hierarchical, static separation of duty and dynamic separation of duty components of the RBAC specification.  The [wiki:Internal/Rbac/OrbitRbacDesign ORBIT RBAC Design] page and its subsidiary pages contain design issues and decisions.  The [wiki:Internal/Rbac/LdapResources LDAP Resources] and [wiki:Internal/Rbac/RbacResources RBAC Resources] pages each briefly describe important sources then give a fairly comprehensive list of references.  All of the bracketed wiki references like  [[http://orbit-lab.org/attachment/wiki/Internal/Rbac/RbacResources/ANSI+INCITS+359-2004.pdf Ame04]] are on the [wiki:Internal/Rbac/RbacResources RBAC Resources] page.