Description

Access control lists enable administrators to identify specific traffic which get special treatment. This course introduces the general concepts of ACL operation and how ACLs can use wildcard masking, as well as how to determine the wildcard mask for a range of IP subnets. The course distinguishes between different types of ACLs, with a focus on the configuration for standard numbered ACLs.
Two scalability challenges for the Internet are the depletion of the registered IPv4 address space and scaling in routing. Cisco IOS NAT and PAT are mechanisms for conserving registered IP addresses in large networks, and they also simplify IP addressing tasks. The course illustrates how to establish a translation between an inside local and inside global address using DHCP clients, NAT, and PAT on Cisco router.