Course info
Nov 28, 2016
1h 38m

Network address translation (NAT) solves the problem of allowing a device with a non-routable, private IP address to get routed to the public Internet by allowing routers to manipulate the packet and segment headers. In this course, Network Address Translation (NAT) for Cisco CCNA 200-125/100-105, you'll learn all about how this works. First, you'll get an introduction to NAT, its history, and why it was developed. Next, you'll spend some time exploring the different types of NAT. Finally you'll learn how to implement and troubleshoot static NAT, dynamic NAT with overload, and port forwarding. By the end of this course, you will be able to implement all the different types of NAT in your environment.

About the author
About the author

For nearly 20 years, Ross has taught and managed data networks.

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Section Introduction Transcripts
Section Introduction Transcripts

Course Overview
Hi, everyone, my name is Ross Bagurdes and welcome to my course, Network Address Translation, or NAT. I am a network engineer with 20 years experience building and managing enterprise networks and teaching people about them. Network Address Translation, or NAT, is a mandatory feature on modern networks whether they are at home or in a small or large business. NAT is a method of modifying packet headers and segment headers to change the source and or destination IP address and port number as it moves through a router. NAT is used to bridge private networks addressed with private, unroutable IP addresses to the public internet. In this course, we'll learn about the different applications of NAT, including Static NAT, Dynamic NAT with overload, which is also called port address translation, or PAT, as well as Port forwarding. By the end of this course, you will be able to implement and troubleshoot NAT, PAT, PAT with port forwarding, as well as an approach to troubleshooting Network Address Translation by examining some common NAT configuration errors. Before beginning the course, you should be familiar with IP addressing, packet headers, TCP and UDP segments and their headers, Access Control Lists, as well as how packets are routed through a network, which all can be learned in the previous videos in this CCNA series. From here you should feel comfortable diving in to the last course of the ICND1 part of CCNA training called Building and Troubleshooting a network with ICND1 skills. I hope you'll join me on this journey to learn the different applications of NAT with the Network Address Translation course at Pluralsight.

Introduction to NAT
Welcome to Pluralsight. I'm Ross Bagurdes. This course is Network Address Translation for Cisco CCNA 200-125 and the 100-105 exams. This first module is introduction to Network address translation or NAT. What I want to do here is examine this private address range and the public address ranges, which we'll help us identify the need for Network address translation. And then what I'd like to do is go through Network address translation types. After we're finished with this, we'll move on to some new modules where we'll specifically go into detailed Network address translation operation and configuration.

Static NAT
Welcome to Pluralsight, I'm Ross Bagurdes. This module is static network address translation. What we want to do in this module is describe the static NAT use cases and then explain how it operates. After we're done with that, we're going to implement static NAT on a Cisco router.

Dynamic NAT with Overload
Welcome to Pluralsight, I'm Ross Bagurdes. This module is Dynamic NAT with Overload. Now NAT with Overload is sometimes called port address translation, or PAT. This is one of the most common uses of network address translation because it allows us to take a large number of private addresses on our inside network and use just one single public IP address on our outside network. Our goals this module are to describe the need for dynamic NAT with overload or PAT. We're going to explain the port address translation operation and then we're going to go implement port address translation on our router, just like we did for static NAT.

Check Your Knowledge
Welcome to Pluralsight, I'm Ross Bagurdes, let's wrap up network address translation with a check your knowledge section and take a look at port forwarding and NAT troubleshooting. The goals this module are to describe port forwarding. Many of you newbs out there probably have done something with port forwarding in order to get a video game you are playing to work on your home network. You may have just used Google to figure out what buttons to push and what numbers to type in, and in this module we're going to find out exactly what's happening with port forwarding so that the next time you need to set up your game to go play with somebody else on the Internet, you know exactly what port forwarding is doing. We're also going to implement port forwarding on our CISCO router, then we're going to implement port forwarding, along with port address translation, which is very much like how your home network would be set up, especially if you were playing that video game. Now when we do port forwarding it doesn't just have to be for video games, there are lots of uses for this, and we're going to take a look at that as we move through this module. Last, we're going to wrap up doing some basic troubleshooting of NAT, looking at some very common errors that can occur when we're configuring network address translation.