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

Implementing Secure Protocols Segregation/Segmentation/Isolation

A protocol is the rules required by different applications for the exchange of data where the application can perform actions such as running commands on remote systems, sending and receiving email, or maybe downloading files from the internet. Each application has a special port number it uses for communication. If you think of ports as being TV channels, if we want to watch sport we go to the sports channels, if we want to watch news we go to the news channel. Applications are the same; if we want to send an email, we use a mail application, and they all have a distinct port number for communication.

There are two types of ports: Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). The main difference between the two is that the TCP is connection-orientated as it uses a three-way handshake, and...