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

Chapter 12: Configuring Device Access Control and VPNs

A key topic within the field of Information Technology (IT) is ensuring secure configurations are always applied to our devices. Secure configurations help to ensure unauthorized persons are not granted access to a device due to a device's misconfiguration. Quite often, hackers can gain access to companies' perimeter devices such as routers and firewalls simply by guessing the required password, and at times, device administrators use default configurations and default user accounts. Sometimes, administrative access is not securely configured, and attackers are able to access devices and perform malicious actions. Ensuring secure access to networking devices should be a top priority for all IT professionals.

In this chapter, you will learn how to secure your networking devices to prevent unauthorized access by implementing secure configuration best practices. Furthermore, you will discover and learn about the importance...