Book Image

CCNA Routing and Switching 200-125 Certification Guide

By : Lazaro (Laz) Diaz
Book Image

CCNA Routing and Switching 200-125 Certification Guide

By: Lazaro (Laz) Diaz

Overview of this book

Cisco Certified Network Associate (CCNA) Routing and Switching is one of the most important qualifications for keeping your networking skills up to date. CCNA Routing and Switching 200-125 Certification Guide covers topics included in the latest CCNA exam, along with review and practice questions. This guide introduces you to the structure of IPv4 and IPv6 addresses and examines in detail the creation of IP networks and sub-networks and how to assign addresses in the network. You will then move on to understanding how to configure, verify, and troubleshoot layer 2 and layer 3 protocols. In addition to this, you will discover the functionality, configuration, and troubleshooting of DHCPv4. Combined with router and router simulation practice, this certification guide will help you cover everything you need to know in order to pass the CCNA Routing and Switching 200-125 exam. By the end of this book, you will explore security best practices, as well as get familiar with the protocols that a network administrator can use to monitor the network.
Table of Contents (24 chapters)
4
Subnetting in IPv4
21
Mock Test Questions
22
Assessments

Configuring NAT inside the router

Using the same topology we have been looking at, we are now going to go inside the router and configure NAT overload:

When configuring NAT overload, make sure you use the word overload at the end of the third line. You also need to be careful when typing in the pool name, as it's case sensitive, and make sure you point to the correct ACL. You must be aware of all these pitfalls when you configure PAT. Now we need to test and verify that NAT is translating. We will access the web server through the browser on all three PC's.

PC0:

PC1:

PC2:

Okay, all computers were able to reach the website using the DNS domain name.