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Cisco Secure ACS 3.0 for Windows 2000/NT Servers User Guide
78-13751-01, Version 3.0
Chapter 12      Administering External User Databases
Database Group Mappings
Group Mapping by Group Set Membership
You can create group mappings for some external user databases based on the 
combination of external user database groups to which users belong. The 
following are the external user database types for which you can create group 
mappings based on group set membership:
Windows NT/2000
Novell NDS
Generic LDAP
Note
Windows NT/2000 databases are defined by domain name.
When you configure a Cisco Secure ACS group mapping based on group set 
membership, you can add one or many external user database groups to the set. 
For Cisco Secure ACS to map a user to the specified Cisco Secure ACS group, the 
user must match all the external user database groups in the set.
As an example, you could configure a group mapping for users who belong to both 
the Engineering and Tokyo groups and a separate one for users who belong to both 
Engineering and London. You could then configure separate group mappings for 
the combinations of Engineering-Tokyo and Engineering-London and configure 
different access times for the Cisco Secure ACS groups to which they map. You 
could also configure a group mapping that only included the Engineering group 
that would map other members of the Engineering group who were not members 
of Tokyo or London.
Group Mapping Order
Cisco Secure ACS always maps users to a single Cisco Secure ACS group, yet a 
user can belong to more than one group set mapping. For example, a user, John, 
could be a member of the group combination Engineering and California, and at 
the same time be a member of the group combination Engineering and Managers. 
If there are Cisco Secure ACS group set mappings for both these combinations, 
Cisco Secure ACS has to determine to which group John should be assigned.
Cisco Secure ACS prevents conflicting group set mappings by assigning the 
group set mappings a mapping order. When a user authenticated by an external 
user database is to be assigned to a Cisco Secure ACS group, Cisco Secure ACS