Access Control

Procedures and controls that limit or detect access to critical information resources. This can be accomplished through software, biometrics devices, or physical access to a controlled space. 

See NIST SP 800-192 and NISTIR 7316 under Access Control for more information. 

The process of granting or denying specific requests to: (i) obtain and use information and related information processing services; and (ii) enter specific physical facilities (e.g., Federal buildings, military establishments, and border-crossing entrances). 

See NIST SP 800-79-2 under Access Control for more information.