What is ACL (Access Control List)?

Access Control List is an advanced feature of the switch, it allows network administrators to configure the switch to examine packet formats and content from Layer 2, Layer 3, or Layer 4 (also known as the MAC, IP and TCP/UDP layers). After these layer parameters are defined and detected, the switch can trigger network decisions such as Access Control Lists (ACLs) for protection against DoS attacks, establishing rate limits for excessive bandwidth usage, and altering QoS to support converged applications.