Free Word document download

Cisco Command Reference

Access Control 

Access Control prevents unauthorized access to—and unauthorized use of—resources.  Access controls are safeguards used to control user access to files, ports, or other system resources.  It is normally a fundamental part of an overall defense in depth strategy.  Access controls are often inherent in the application or OS software (e.g., setting file access privileges in Unix).  

In the organization’s operating environment, access controls must ensure that organization’s facilities are safe from unauthorized physical access and harm and that access is controlled for the information system resources used in those facilities.