Comptia security+ guide to network security fundamentals 6th edition pdf

SE/CIAMPA, CompTIA Security+ Guide to Network Security Fundamentals, 6th Edition ISBN-978-1-337-28878-1 ©20XX Designer: XXX Text & Cover printer: Quad Graphics Binding: PB Trim: 7.375 x 9.125" CMYK

Security+ Guide to Network Security Fundamentals

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Security+ Guide to Network Security Fundamentals

INFORMATION SECURITY

Sixth Edition

Mark Ciampa

Sixth Edition

CIAMPA

Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203

CompTIA Security+ SY0-501 Exam Objectives

Security+ Exam Domain/Objectives Chapter Bloom’s Taxonomy 1.0: Threats, Attacks, and Vulnerabilities 1.1 Given a scenario, analyze indicators of compromise and determine the type of

malware. 2 Analyze

1.2 Compare and contrast types of attacks. 2 3 5 8

11 15

Understand Analyze Understand Apply/Understand Create Apply

1.3 Explain threat actor types and attributes. 1 Analyze/Apply 1.4 Explain penetration testing concepts. 13 Apply 1.5 Explain vulnerability scanning concepts. 13 Apply 1.6 Explain the impact associated with types of vulnerabilities. 1

3 4 5 9

10

Understand Understand Understand Understand Understand Understand

2.0: Technologies and Tools 2.1 Install and configure network components, both hardware- and software-based,

to support organizational security. 4 6 7 8

Apply Analyze Apply Analyze/Evaluate

2.2 Given a scenario, use appropriate software tools to assess the security posture of an organization.

8 13 14

Evaluate Analyze/Evaluate Evaluate

2.3 Given a scenario, troubleshoot common security issues. 15 Analyze 2.4 Given a scenario, analyze and interpret output from security technologies. 6

7 9

Analyze Analyze Analyze

2.5 Given a scenario, deploy mobile devices securely. 8 10 11

Apply/Evaluate Analyze/Create Analyze

2.6 Given a scenario, implement secure protocols. 4 5

Apply Analyze

3.0: Architecture and Design 3.1 Explain use cases and purpose for frameworks, best practices and secure

configuration guides. 1

15 Analyze Understand

3.2 Given a scenario, implement secure network architecture concepts. 6 7 8

13

Analyze Apply Apply/Evaluate Apply

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Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203

Australia • Brazil • Mexico • Singapore • United Kingdom • United States

INFORMATION SECURITY

Mark Ciampa, Ph.D.

Sixth Edition

SECURITY+ GUIDE TO NETWORK SECURITY

CompTIA ®

FUNDAMENTALS

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Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203

© 2018, 2015 Cengage Learning Unless otherwise noted, all content is © Cengage.

Security+ Guide to Network Security Fundamentals, Sixth Edition

Mark Ciampa

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Library of Congress Control Number: 2017950178

ISBN: 978-1-337-28878-1 LLF ISBN: 978-1-337-68585-6

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Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203

Brief Contents INTRODUCTION.............................................................................................xv

PART 1

SECURITY AND ITS THREATS ..........................................................................1

CHAPTER 1

Introduction to Security ................................................................................3

CHAPTER 2

Malware and Social Engineering Attacks ................................................. 51

PART 2

CRYPTOGRAPHY .......................................................................................... 97

CHAPTER 3

Basic Cryptography ..................................................................................... 99

CHAPTER 4

Advanced Cryptography and PKI ............................................................ 145

PART 3

NETWORK ATTACKS AND DEFENSES ....................................................... 189

CHAPTER 5

Networking and Server Attacks .............................................................. 191

CHAPTER 6

Network Security Devices, Design, and Technology ............................. 233

CHAPTER 7

Administering a Secure Network ............................................................ 281

CHAPTER 8

Wireless Network Security ....................................................................... 321

PART 4

DEVICE SECURITY....................................................................................... 371

CHAPTER 9

Client and Application Security ............................................................... 373

iii

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Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203

Brief Contents

CHAPTER 10

Mobile and Embedded Device Security ...................................................421

PART 5

IDENTITY AND ACCESS MANAGEMENT ....................................................469

CHAPTER 11

Authentication and Account Management ............................................471

CHAPTER 12

Access Management ..................................................................................521

PART 6

RISK MANAGEMENT ...................................................................................563

CHAPTER 13

Vulnerability Assessment and Data Security .........................................565

CHAPTER 14

Business Continuity ...................................................................................607

CHAPTER 15

Risk Mitigation ...........................................................................................651

APPENDIX A

CompTIA SY0-501 Certification Exam Objectives ...................................691

GLOSSARY ......................................................................................................... 713

INDEX .................................................................................................................741

iv

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Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203

Table of Contents INTRODUCTION...........................................................................................................xv

PART 1

SECURITY AND ITS THREATS .....................................................1

CHAPTER 1

Introduction to Security ...........................................................3 Challenges of Securing Information .................................................................. 8

Today’s Security Attacks ....................................................................................8 Reasons for Successful Attacks ........................................................................12 Difficulties in Defending Against Attacks ....................................................... 14

What Is Information Security? .......................................................................... 17 Understanding Security ....................................................................................18 Defining Information Security .........................................................................18 Information Security Terminology ..................................................................21 Understanding the Importance of Information Security ................................ 24

Who Are the Threat Actors? .............................................................................. 28 Script Kiddies ................................................................................................... 29 Hactivists ......................................................................................................... 29 Nation State Actors ..........................................................................................30 Insiders ............................................................................................................30 Other Threat Actors ..........................................................................................31

Defending Against Attacks ............................................................................... 32 Fundamental Security Principles .................................................................... 32 Frameworks and Reference Architectures ...................................................... 35

Chapter Summary .............................................................................................. 35

Key Terms ........................................................................................................... 37

Review Questions............................................................................................... 37

Case Projects ...................................................................................................... 46

CHAPTER 2

Malware and Social Engineering Attacks .............................51 Attacks Using Malware ...................................................................................... 53

Circulation........................................................................................................ 55 Infection ........................................................................................................... 61

v

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Table of Contentsvi

Concealment .................................................................................................... 65 Payload Capabilities .........................................................................................66

Social Engineering Attacks ................................................................................ 73 Psychological Approaches ............................................................................... 74 Physical Procedures .........................................................................................80

Chapter Summary .............................................................................................. 82

Key Terms ........................................................................................................... 84

Review Questions .............................................................................................. 84

Case Projects ...................................................................................................... 92

PART 2

CRYPTOGRAPHY ......................................................................97

CHAPTER 3

Basic Cryptography .................................................................99 Defining Cryptography .................................................................................... 101

What Is Cryptography? ................................................................................... 101 Cryptography and Security ............................................................................ 105 Cryptography Constraints ...............................................................................107

Cryptographic Algorithms ............................................................................... 108 Hash Algorithms .............................................................................................110 Symmetric Cryptographic Algorithms ........................................................... 113 Asymmetric Cryptographic Algorithms ......................................................... 116

Cryptographic Attacks ..................................................................................... 123 Algorithm Attacks ........................................................................................... 123 Collision Attacks ............................................................................................. 125

Using Cryptography ......................................................................................... 126 Encryption through Software ......................................................................... 127 Hardware Encryption .....................................................................................128

Chapter Summary ............................................................................................ 130

Key Terms ......................................................................................................... 132

Review Questions............................................................................................. 133

Case Projects .................................................................................................... 142

CHAPTER 4

Advanced Cryptography and PKI ........................................145 Implementing Cryptography .......................................................................... 147

Key Strength ....................................................................................................147 Secret Algorithms ...........................................................................................148

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Table of Contents vii

Block Cipher Modes of Operation ................................................................. 149 Crypto Service Providers................................................................................ 150 Algorithm Input Values .................................................................................. 151

Digital Certificates ........................................................................................... 152 Defining Digital Certificates ............................................................................ 152 Managing Digital Certificates .........................................................................154 Types of Digital Certificates ............................................................................158

Public Key Infrastructure (PKI) ....................................................................... 165 What Is Public Key Infrastructure (PKI)? ....................................................... 166 Trust Models .................................................................................................. 166 Managing PKI ..................................................................................................168 Key Management ............................................................................................ 171

Cryptographic Transport Protocols ............................................................... 174 Secure Sockets Layer (SSL) .............................................................................. 174 Transport Layer Security (TLS) ....................................................................... 175 Secure Shell (SSH) ...........................................................................................176 Hypertext Transport Protocol Secure (HTTPS) ...............................................176 Secure/Multipurpose Internet Mail Extensions (S/MIME) ............................ 177 Secure Real-time Transport Protocol (SRTP) .................................................. 177 IP Security (IPsec) ........................................................................................... 177

Chapter Summary ............................................................................................ 179

Key Terms ......................................................................................................... 181

Review Questions............................................................................................. 181

Case Projects .................................................................................................... 187

PART 3

NETWORK ATTACKS AND DEFENSES ....................................189

CHAPTER 5

Networking and Server Attacks ..........................................191 Networking-Based Attacks ............................................................................. 193

Interception ....................................................................................................194 Poisoning ....................................................................................................... 196

Server Attacks .................................................................................................. 201 Denial of Service (DoS) ...................................................................................201 Web Server Application Attacks .................................................................... 203 Hijacking ........................................................................................................209 Overflow Attacks ............................................................................................ 213 Advertising Attacks ......................................................................................... 215 Browser Vulnerabilities ..................................................................................218

Chapter Summary ............................................................................................ 222

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Table of Contentsviii

Key Terms ......................................................................................................... 223

Review Questions............................................................................................. 223

Case Projects .................................................................................................... 229

CHAPTER 6

Network Security Devices, Design, and Technology .........233 Security Through Network Devices ............................................................... 235

Standard Network Devices ............................................................................ 236 Network Security Hardware .......................................................................... 246

Security Through Network Architecture ....................................................... 260 Security Zones ...............................................................................................260 Network Segregation ..................................................................................... 263

Security Through Network Technologies ...................................................... 265 Network Access Control (NAC) ...................................................................... 265 Data Loss Prevention (DLP)............................................................................ 267

Chapter Summary ............................................................................................ 269

Key Terms ......................................................................................................... 271

Review Questions............................................................................................. 271

Case Projects .................................................................................................... 279

CHAPTER 7

Administering a Secure Network ........................................281 Secure Network Protocols .............................................................................. 283

Simple Network Management Protocol (SNMP) ........................................... 285 Domain Name System (DNS) ........................................................................ 286 File Transfer Protocol (FTP)............................................................................ 288 Secure Email Protocols ..................................................................................290 Using Secure Network Protocols ....................................................................291

Placement of Security Devices and Technologies ........................................ 292

Analyzing Security Data .................................................................................. 295 Data from Security Devices ........................................................................... 296 Data from Security Software ......................................................................... 297 Data from Security Tools ............................................................................... 298 Issues in Analyzing Security Data ................................................................. 298

Managing and Securing Network Platforms ................................................ 300 Virtualization .................................................................................................300 Cloud Computing ...........................................................................................304 Software Defined Network (SDN) ..................................................................306

Chapter Summary ............................................................................................ 309

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Table of Contents ix

Key Terms ......................................................................................................... 310

Review Questions............................................................................................. 311

Case Projects .................................................................................................... 318

CHAPTER 8

Wireless Network Security ..................................................321 Wireless Attacks ............................................................................................... 324

Bluetooth Attacks........................................................................................... 324 Near Field Communication (NFC) Attacks .....................................................327 Radio Frequency Identification (RFID) Attacks ............................................. 330 Wireless Local Area Network Attacks .............................................................332

Vulnerabilities of IEEE Wireless Security ....................................................... 341 Wired Equivalent Privacy .............................................................................. 342 Wi-Fi Protected Setup .................................................................................... 343 MAC Address Filtering ................................................................................... 344 SSID Broadcasting .......................................................................................... 345

Wireless Security Solutions ............................................................................ 346 Wi-Fi Protected Access (WPA) ....................................................................... 347 Wi-Fi Protected Access 2 (WPA2) ................................................................... 349 Additional Wireless Security Protections .......................................................352

Chapter Summary ............................................................................................ 356

Key Terms ......................................................................................................... 359

Review Questions............................................................................................. 359

Case Projects .................................................................................................... 368

PART 4

DEVICE SECURITY ...................................................................371

CHAPTER 9

Client and Application Security ...........................................373 Client Security .................................................................................................. 375

Hardware System Security .............................................................................375 Securing the Operating System Software ...................................................... 379 Peripheral Device Security ............................................................................. 388

Physical Security .............................................................................................. 392 External Perimeter Defenses ......................................................................... 393 Internal Physical Access Security .................................................................. 395 Computer Hardware Security ....................................................................... 400

Application Security ......................................................................................... 401 Application Development Concepts ..............................................................402