Access Control Lists (ACLs) are an important and useful tool on a data network. ACLs allow an administrator to select traffic and filter traffic as it flows through a network. In this course, Access Control Lists (ACLs) for Cisco CCNA 200-125/100-105, you will first examine how standard and extended IPv4 access lists operate. Next, you'll learn how to implement each type of list on a router. Finally you'll explore common errors and how to troubleshoot ACLs using Wireshark. By the end of this course, you will be able to write your own access control lists to filter whatever traffic you want to either permit or deny on your networks.