We have a product designed to provide Access Control and Privileged Identity Management using RBAC (Centrify Standard Edition). This product provides:
- Identity flexibility
- Advanced access controls
- Temporary access control
- Privilege Management
- Multi-factor authentication
- Multi-platform: UNIX, Linux and Windows
- Reporting and attestation data
We have coached customers on how to achieve the results you desire as well.
http://community.centrify.com/t5/Centrify-Express/Limit-access-only-to-a-particular-group/td-p/18539
R.P