What is the role of an access control list (ACL)?

An access control list (ACL) serves a critical function in security by defining permissions for users and systems. By specifying what actions each user or system is allowed to perform on a resource, such as files, directories, or network devices, ACLs help ensure that only authorized individuals or systems can access sensitive data or perform certain operations. This granular control is essential for maintaining the confidentiality, integrity, and availability of information within a system.

Implementing ACLs allows organizations to enforce security policies effectively, ensuring that users have the necessary access to conduct their activities while minimizing the risk of unauthorized access or data breaches. By clearly delineating user permissions, ACLs are integral to a robust security framework.