CASP+ Definitions: ACLs
In cybersecurity, Access Control Lists (ACLs) refer to a set of rules or policies that are used to control network traffic and access to resources. ACLs are used by network administrators to specify which devices or users are allowed or denied access to specific resources or areas of the network.
An ACL typically consists of a list of entries that define what types of traffic are permitted or blocked based on criteria such as source IP address, destination IP address, port number, and protocol type. These entries can be configured on routers, firewalls, switches, and other network devices to provide an additional layer of security for the network.
ACLs can be used for a variety of purposes, such as restricting access to sensitive data, preventing unauthorized access to network resources, and enforcing compliance with regulatory requirements. They are an essential component of network security and are often used in combination with other security measures such as firewalls, intrusion detection and prevention systems, and virtual private networks (VPNs).
