Home > Store

Network Defense and Countermeasures: Principles and Practices, 4th Edition

Add To My Wish List

Network Defense and Countermeasures: Principles and Practices, 4th Edition

By William Easttom
Published Sep 22, 2023 by Pearson IT Certification. Part of the Pearson IT Cybersecurity Curriculum (ITCC) series.

eBook

Your Price: $73.09
List Price: $85.99
Includes EPUB and PDF
About eBook Formats

This eBook includes the following formats, accessible from your Account page after purchase:

ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

Adobe Reader PDF The popular standard, used most often with the free Acrobat® Reader® software.

This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

Add to cart

Also available in other formats.

Description

Sample Content

Updates

More Information

Description

Copyright 2024
Edition: 4th

eBook
ISBN-10: 0-13-820065-3
ISBN-13: 978-0-13-820065-7

All you need to know about defending networks, in one book

Clearly explains concepts, terminology, challenges, tools, and skills
Covers key security standards and models for business and government
The perfect introduction for all network/computer security professionals and students

Welcome to today's most useful and practical introduction to defending modern networks. Drawing on decades of experience, Chuck Easttom brings together updated coverage of all the concepts, terminology, techniques, and solutions you'll need to be effective.

Easttom thoroughly introduces the core technologies of modern network security, including firewalls, intrusion-detection systems, and VPNs. Next, he shows how encryption can be used to safeguard data as it moves across networks.

You'll learn how to harden operating systems, defend against malware and network attacks, establish robust security policies, and assess network security using industry-leading standards and models. You'll also find thorough coverage of key issues such as physical security, forensics, and cyberterrorism.

Throughout, Easttom blends theory and application, helping you understand both what to do and why. In every chapter, quizzes, exercises, projects, and web resources deepen your understanding and help you use what you've learnedin the classroom and in your career.

LEARN HOW TO

Evaluate key network risks and dangers
Choose the right network security approach for your organization
Anticipate and counter widespread network attacks, including those based on "social engineering"
Successfully deploy and apply firewalls and intrusion detection systems
Secure network communication with virtual private networks
Protect data with cryptographic public/private key systems, digital signatures, and certificates
Defend against malware, including ransomware, Trojan horses, and spyware
Harden operating systems and keep their security up to date
Define and implement security policies that reduce risk
Explore leading security standards and models, including ISO and NIST standards
Prepare for an investigation if your network has been attacked
Understand the growing risks of espionage and cyberterrorism



Sample Content

Preface xxiii

Chapter 1: Introduction to Network Security 2

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

The Basics of a Network.. . . . . . . . . . . . . . . . . . . . . . . . . 3

Basic Network Utilities.. . . . . . . . . . . . . . . . . . . . . . . . . 11

The OSI Model.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

What Does This Mean for Security?. . . . . . . . . . . . . . . . . . . . 16

Assessing Likely Threats to the Network. . . . . . . . . . . . . . . . . . 16

Classifications of Threats.. . . . . . . . . . . . . . . . . . . . . . . . 20

Likely Attacks.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Threat Assessment.. . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Understanding Security Terminology.. . . . . . . . . . . . . . . . . . . . 26

Choosing a Network Security Approach.. . . . . . . . . . . . . . . . . . 30

Network Security and the Law.. . . . . . . . . . . . . . . . . . . . . . 32

Using Security Resources. . . . . . . . . . . . . . . . . . . . . . . . 34

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Chapter 2: Types of Attacks 42

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Understanding Denial of Service Attacks.. . . . . . . . . . . . . . . . . . 43

Defending Against Buffer Overflow Attacks.. . . . . . . . . . . . . . . . . 63

Defending Against IP Spoofing. . . . . . . . . . . . . . . . . . . . . . 64

Defending Against Session Hijacking.. . . . . . . . . . . . . . . . . . . 66

Blocking Virus and Trojan Horse Attacks. . . . . . . . . . . . . . . . . . 66

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Chapter 3: Fundamentals of Firewalls 82

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

What Is a Firewall?. . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Implementing Firewalls.. . . . . . . . . . . . . . . . . . . . . . . . . 90

Firewall Deployment.. . . . . . . . . . . . . . . . . . . . . . . . . . 95

Selecting and Using a Firewall.. . . . . . . . . . . . . . . . . . . . . . 96

Using Proxy Servers.. . . . . . . . . . . . . . . . . . . . . . . . . . 97

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Chapter 4: Firewall Practical Applications 106

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Using Single Machine Firewalls.. . . . . . . . . . . . . . . . . . . . . 107

Windows 10 Firewall.. . . . . . . . . . . . . . . . . . . . . . . . . . 108

User Account Control.. . . . . . . . . . . . . . . . . . . . . . . . . 110

Linux Firewalls.. . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Using Small Office/Home Office Firewalls.. . . . . . . . . . . . . . . . . 118

Using Medium-Sized Network Firewalls.. . . . . . . . . . . . . . . . . . 121

Using Enterprise Firewalls. . . . . . . . . . . . . . . . . . . . . . . . 124

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Chapter 5: Intrusion-Detection Systems 132

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Understanding IDS Concepts.. . . . . . . . . . . . . . . . . . . . . . 133

IDS Components and Processes.. . . . . . . . . . . . . . . . . . . . . 135

SIEM.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Evasion Techniques.. . . . . . . . . . . . . . . . . . . . . . . . . . 137

Understanding and Implementing IDSs.. . . . . . . . . . . . . . . . . . 138

Understanding and Implementing Honeypots. . . . . . . . . . . . . . . . 141

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Chapter 6: Encryption Fundamentals 152

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

The History of Encryption.. . . . . . . . . . . . . . . . . . . . . . . . 153

Learning About Modern Encryption Methods.. . . . . . . . . . . . . . . . 160

Identifying Good Encryption.. . . . . . . . . . . . . . . . . . . . . . . 173

Understanding Digital Signatures and Certificates.. . . . . . . . . . . . . . 174

MAC and HMAC.. . . . . . . . . . . . . . . . . . . . . . 179

Understanding and Using Decryption.. . . . . . . . . . . . . . . . . . . 179

Cracking Passwords.. . . . . . . . . . . . . . . . . . . . . . . . . . 180

Steganography. . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Steganalysis.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Quantum Computing and Quantum Cryptography. . . . . . . . . . . . . . 186

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Endnote.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Chapter 7: Virtual Private Networks 194

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

Basic VPN Technology.. . . . . . . . . . . . . . . . . . . . . . . . . 195

Using VPN Protocols for VPN Encryption.. . . . . . . . . . . . . . . . . 197

IPsec.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

SSL/TLS.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Other VPN Protocols.. . . . . . . . . . . . . . . . . . . . . . . . . . 209

Implementing VPN Solutions.. . . . . . . . . . . . . . . . . . . . . . 210

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Chapter 8: Operating System Hardening 222

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Configuring Windows Properly.. . . . . . . . . . . . . . . . . . . . . . 223

Configuring Linux Properly.. . . . . . . . . . . . . . . . . . . . . . . 244

Patching the Operating System.. . . . . . . . . . . . . . . . . . . . . 245

Configuring Browsers.. . . . . . . . . . . . . . . . . . . . . . . . . 246

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

Chapter 9: Defending Against Virus Attacks 260

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

Understanding Virus Attacks.. . . . . . . . . . . . . . . . . . . . . . 261

Virus Scanners.. . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

Virus Scanning Techniques. . . . . . . . . . . . . . . . . . 272

When Antivirus Causes a Problem. . . . . . . . . . . . . . . 274

Commercial Antivirus Software.. . . . . . . . . . . . . . . . 274

Antivirus Policies and Procedures.. . . . . . . . . . . . . . . . . . . . 283

Additional Methods for Defending Your System.. . . . . . . . . . . . . . . 284

What to Do If Your System Is Infected by a Virus.. . . . . . . . . . . . . . 285

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

Chapter 10: Defending Against Trojan Horses and Phishing 296

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296

Trojan Horses.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297

Phishing.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313

Chapter 11: Security Policies 318

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318

ISO 27002. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319

Important Standards.. . . . . . . . . . . . . . . . . . . . . . . . . . 322

Defining User Policies.. . . . . . . . . . . . . . . . . . . . . . . . . 324

Defining System Administration Policies.. . . . . . . . . . . . . . . . . . 331

Defining Access Control.. . . . . . . . . . . . . . . . . . . . . . . . 336

Defining Developmental Policies.. . . . . . . . . . . . . . . . . . . . . 337

Disaster Recovery.. . . . . . . . . . . . . . . . . . . . . . . . . . . 338

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339

Chapter 12: Assessing System Security 346

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346

Risk Assessment Concepts.. . . . . . . . . . . . . . . . . . . . . . . 347

Evaluating the Security Risk.. . . . . . . . . . . . . . . . . . . . . . . 348

Conducting the Initial Assessment. . . . . . . . . . . . . . . . . . . . 351

Probing the Network.. . . . . . . . . . . . . . . . . . . . . . . . . . 357

Vulnerabilities.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381

McCumber Cube.. . . . . . . . . . . . . . . . . . . . . . . . . . . 384

Security Documentation.. . . . . . . . . . . . . . . . . . . . . . . . 385

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388

Chapter 13: Security Standards 394

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394

COBIT.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394

ISO Standards.. . . . . . . . . . . . . . . . . . . . . . . . . . . . 396

NIST Standards.. . . . . . . . . . . . . . . . . . . . . . . . . . . . 397

U.S. DoD Standards.. . . . . . . . . . . . . . . . . . . . . . . . . . 403

Using the Common Criteria.. . . . . . . . . . . . . . . . . . . . . . . 405

Using Security Models.. . . . . . . . . . . . . . . . . . . . . . . . . 407

U.S. Federal Regulations, Guidelines, and Standards.. . . . . . . . . . . . 410

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414

Chapter 14: Physical Security and Disaster Recovery 422

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422

Physical Security.. . . . . . . . . . . . . . . . . . . . . . . . . . . 422

Disaster Recovery.. . . . . . . . . . . . . . . . . . . . . . . . . . . 428

Ensuring Fault Tolerance.. . . . . . . . . . . . . . . . . . . . . . . . 432

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435

Chapter 15: Techniques Used by Attackers 438

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438

Preparing to Hack.. . . . . . . . . . . . . . . . . . . . . . . . . . . 439

The Attack Phase. . . . . . . . . . . . . . . . . . . . . . . . . . . 453

Session Hijacking. . . . . . . . . . . . . . . . . . . . . . . . . . . 457

Wi-Fi Hacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459

Bluetooth Hacking.. . . . . . . . . . . . . . . . . . . . . . . . . . . 459

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462

Chapter 16: Introduction to Forensics 466

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466

General Forensics Guidelines.. . . . . . . . . . . . . . . . . . . . . . 467

FBI Forensics Guidelines. . . . . . . . . . . . . . . . . . . . . . . . 470

Imaging a Drive.. . . . . . . . . . . . . . . . . . . . . . . . . . . . 471

Finding Evidence on the PC.. . . . . . . . . . . . . . . . . . . . . . . 474

Gathering Evidence from a Cell Phone.. . . . . . . . . . . . . . . . . . 485

Forensic Tools to Use.. . . . . . . . . . . . . . . . . . . . . . . . . 491

AccessData Forensic Toolkit.. . . . . . . . . . . . . . . . . 491

EnCase.. . . . . . . . . . . . . . . . . . . . . . . . . . 492

The Sleuth Kit. . . . . . . . . . . . . . . . . . . . . . . 492

OSForensics. . . . . . . . . . . . . . . . . . . . . . . . 492

Forensic Science.. . . . . . . . . . . . . . . . . . . . . . . . . . . 493

To Certify or Not to Certify?.. . . . . . . . . . . . . . . . . . . . . . . 493

Expert Witnesses.. . . . . . . . . . . . . . . . . . . . . . . . . . . 494

Additional Types of Forensics.. . . . . . . . . . . . . . . . . . . . . . 495

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 499

Endnote.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 499

Chapter 17: Cyber Warfare and Terrorism 504

Introduction.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504

Defending Against Computer-Based Espionage. . . . . . . . . . . . . . . 505

Defending Against Computer-Based Terrorism. . . . . . . . . . . . . . . 508

Choosing Defense Strategies.. . . . . . . . . . . . . . . . . . . . . . 514

Summary.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 524

Endnotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 524

Appendix A: Answers 530

Glossary 542

9780138200589, 9/1/2023



Updates

Submit Errata



More Information



InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.

Privacy Notice

Overview

Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security

Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children

This site is not directed to children under the age of 13.

Marketing

Pearson may send or direct marketing communications to users, provided that

Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
Such marketing is consistent with applicable law and Pearson's legal obligations.
Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out

Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

As required by law.
With the consent of the individual (or their parent, if the individual is a minor)
In response to a subpoena, court order or legal process, to the extent permitted or required by law
To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
To investigate or address actual or suspected fraud or other illegal activities
To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links

This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020

Email Address

Corporate, Academic, and Employee Purchases