In network security, what does ACL stand for?

In network security, ACL stands for Access Control List. An Access Control List is a critical component used to enforce security policies within a network. It is essentially a set of rules that define what resources can be accessed by which users or systems and under what conditions.

ACLs are commonly implemented in firewalls and routers to manage and filter traffic. They specify the permissions for users or systems, detailing which can access certain network resources, such as files, computers, or applications. By controlling access, ACLs help to prevent unauthorized access and protect sensitive data within the network.

The use of Access Control Lists is a foundational concept in the realm of network security, as they provide a structured approach to defining and managing permissions, ensuring that only designated entities can access certain resources. This is crucial in maintaining the integrity and security of a network infrastructure.