While, private addresses are not routable and no traffic can be sent to them or by them over the internet. Public addresses are routable addresses that are used on the internet, these addresses allow the users to access resources on a computer network located anywhere in the world. Public and private IP addressĪll IPv4 addresses can be divided further into public (global) and private (local) addresses. IPv4 defines an IP address as a 32-bit number, while IPv6 defines an IP address as a 128-bit number. Table of contentsĪccording to Wikipedia, an Internet Protocol address (IP address) is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
You can download the Cisco packet tracer here. This tutorial uses the Cisco packet tracer.
By the end of this article, the reader will have learned what NAT is, the different types of NAT, and how to configure different types of NAT on a Cisco router.Īs a prerequisite, foundational knowledge of Cisco command-line interface (CLI) and access control list (ACL) would help the readers understand the article better. In this article, we will learn how to implement Network Address Translation (NAT) on a Cisco router.