Book Image

Certified Information Security Manager Exam Prep Guide

By : Hemang Doshi
Book Image

Certified Information Security Manager Exam Prep Guide

By: Hemang Doshi

Overview of this book

With cyber threats on the rise, IT professionals are now choosing cybersecurity as the next step to boost their career, and holding the relevant certification can prove to be a game-changer in this competitive market. CISM is one of the top-paying and most sought-after certifications by employers. This CISM Certification Guide comprises comprehensive self-study exam content for those who want to achieve CISM certification on the first attempt. This book is a great resource for information security leaders with a pragmatic approach to challenges related to real-world case scenarios. You'll learn about the practical aspects of information security governance and information security risk management. As you advance through the chapters, you'll get to grips with information security program development and management. The book will also help you to gain a clear understanding of the procedural aspects of information security incident management. By the end of this CISM exam book, you'll have covered everything needed to pass the CISM certification exam and have a handy, on-the-job desktop reference guide.
Table of Contents (17 chapters)
1
Section 1: Information Security Governance
4
Section 2: Information Risk Management
8
Section 3: Information Security Program Development Management
13
Section 4: Information Security Incident Management

Firewall types and their implementation

A firewall is a device that's used to monitor and control network traffic. It is generally placed in-between an enterprise's internal network and the internet to protect the system and infrastructure of the organization.

Security management should understand the following types of firewalls, as well as how they should be structured to protect information assets. CISM aspirants need to understand the following types and implementations of firewalls:

Figure 9.1 – Types of firewalls

Next, let's look at the different types of firewalls.

Types of firewalls

The following are the basic characteristics of the different types of firewalls.

Packet filtering router

A packet-filtering router is the most simple and initial version of a firewall. It tracks the IP address and port number of both the destination and source and takes action (either to allow or deny the connection) as per the defined...