Book Image

CompTIA Security+ Certification Guide

By : Ian Neil
Book Image

CompTIA Security+ Certification Guide

By: Ian Neil

Overview of this book

CompTIA Security+ is a worldwide certification that establishes the fundamental knowledge required to perform core security functions and pursue an IT security career. CompTIA Security+ Certification Guide is a best-in-class exam study guide that covers all of CompTIA Security+ 501 exam objectives. It is authored by Ian Neil, who is a world-class trainer of CompTIA Security+ 501. Packed with self-assessment scenarios and realistic exam questions, this guide will help you master the core concepts to succeed in the exam the first time you take it. Using relevant examples, you will learn all the important security fundamentals from Certificates and Encryption to Identity and Access Management concepts. You will then dive into the important domains of the exam; namely, threats, attacks and vulnerabilities, technologies and tools, architecture and design, risk management, and cryptography and Public Key Infrastructure (PKI). This book comes with over 600 practice questions with detailed explanation that is at the exam level and also includes two mock exams to help you with your study plan. This guide will ensure that encryption and certificates are made easy for you.
Table of Contents (18 chapters)
12
Mock Exam 1
13
Mock Exam 2
15
Acronyms

Installing and Configuring Network Components

There are many network components and topologies (layouts) that we need to know about to maintain a secure environment. We are going to look at each of these in turn. We need to know how each device is configured and which device is the most appropriate in different scenarios. We will look at firewalls, the main job of which is to prevent unauthorized access to the network.

Firewall

A firewall prevents unauthorized access to the corporate network, and in the Security+ exam, we tend to use a back-to-back configuration, as shown here:

Figure 2: Back-to-back firewall configuration

You can see each of these firewalls is not letting traffic pass through them; this is because we need...