Access Control Lists (ACL)

Access Control Lists (ACL) explores how packet filtering is used to define and enforce control over network traffic by determining which packets are permitted, denied, or matched for additional processing. It begins by explaining the purpose of ACLs and how they are structured, including syntax rules and the logic used to evaluate traffic against configured conditions. Learners also gain insight into how ACLs are applied not only for basic security filtering but also for broader network functions such as traffic classification and policy enforcement. The course includes practical examples from both Cisco and Juniper platforms, demonstrating how ACLs are configured, applied, and verified in real operational environments. It helps learners develop a clear understanding of ACL behavior, enabling them to effectively manage network access, enforce security policies, and troubleshoot filtering-related issues with greater accuracy and confidence.