IP Addressing and General Access List Concepts
This section presents a review of IP addressing and network and subnet masks. It also covers concepts common to both standard and extended IP access lists, such as wildcard masks, explicit deny all masks, implicit masks, and general access list configuration and design principles. This review section is included because you should thoroughly understand IP addressing in order to create effective access lists.
IP Addressing
An IP address is 32 bits in length and is divided into two parts. The first part designates the network portion of the address, and the second part designates the host address portion. The host address can optionally be partitioned into a subnet address and a host address. A subnet ...
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