access control - Computer Definition
A means of controlling access by users to computer systems or to data on a computer system. Different types of access exist. For example, “read access” would suggest that the user has authorization only to read the information he or she is accessing, whereas “write access” would suggest that the user has authorization to both read and alter accessed data.
Access control is also an important concept within Web and other applications. The segmentation of functionality, and even entire sections of an application, are based on access control.
The management of admission to system and network resources. It grants authenticated users access to specific resources based on company policies and the permission level assigned to the user or user group. Access control often includes authentication, which proves the identity of the user or client machine attempting to log in. See network access control, authentication, access control list and information security.