Which service is used by CANES for Identification, Authentication, and Authorization?

The correct answer is the Remote Authentication Dial-In User Service (RADIUS), which is commonly employed in network environments for its capabilities in Identification, Authentication, and Authorization (IA&A). RADIUS operates as a client-server protocol that provides a mechanism for network devices to communicate securely with a central server for user credential validation.

RADIUS is particularly well-suited for situations where numerous users need access to a network, allowing organizations to manage their authentication processes efficiently. When a user attempts to access the network, the authentication request is sent to the RADIUS server, which then checks the provided credentials against a database. Upon successful validation, the server sends a response back to the requesting device, granting the user access based on their assigned permissions.

This capability is crucial for ensuring that only authorized individuals can access specific resources, thereby enhancing network security and enabling proper access management.

In contrast, other options like Directory Service CI focus on directory services for name resolution and management rather than direct authentication. Data Encryption Service is used for securing data but does not cover the processes of identification and authorization. Lastly, a Virtual Private Network Service primarily provides secure communication over a public network but does not inherently include the IA&A functionalities provided by RADIUS.