Book Image

Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide

By : Glen D. Singh
Book Image

Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide

By: Glen D. Singh

Overview of this book

In the dynamic technology landscape, staying on top of the latest technology trends is a must, especially if you want to build a career in network administration. Achieving CCNA 200-301 certification will validate your knowledge of networking concepts, and this book will help you to do just that. This exam guide focuses on the fundamentals to help you gain a high-level understanding of networking, security, IP connectivity, IP services, programmability, and automation. Starting with the functions of various networking components, you’ll discover how they are used to build and improve an enterprise network. You’ll then delve into configuring networking devices using a command-line interface (CLI) to provide network access, services, security, connectivity, and management. The book covers important aspects of network engineering using a variety of hands-on labs and real-world scenarios that will help you gain essential practical skills. As you make progress, this CCNA certification study guide will help you get to grips with the solutions and technologies that you need to implement and administer a broad range of modern networks and IT infrastructures. By the end of this book, you’ll have gained the confidence to pass the Cisco CCNA 200-301 exam on the first attempt and be well-versed in a variety of network administration and security engineering solutions.
Table of Contents (26 chapters)
1
Section 1: Network Fundamentals
6
Section 2: Network Access
9
Section 3: IP Connectivity
12
Section 4: IP Services
15
Section 5: Security Fundamentals
20
Section 6: Automation and Programmability
22
Chapter 16: Mock Exam 1
23
Chapter 17: Mock Exam 2

Types of NAT

There are many types of NAT translations. Each type has its own advantages, disadvantages, and real-world use. In this section, you will learn about their characteristics and operations, and how to configure each type of NAT on a Cisco IOS router.

Static NAT

Static NAT uses a one-to-one mapping of the inside local address with the inside global address. This type of NAT mapping does not change—as the name implies, the mapping remains constant. This type of NAT is very useful when you want to allow external users on the internet to access a device such as a web server that sits on your internal private network in your organization.

Let's imagine that your organization has a web server located on a private network and you are tasked to allow users from the internet access to the server. To complete this task, you can create a one-to-one static mapping between the web server's private IP address (inside local) and the public IP address on the router...