IP Security Overview 266
IP Security Policy 270
Encapsulating Security Payload 276
Combining Security Associations 283
Internet Key Exchange 287
Cryptographic Suites 295
Recommended Reading 297
Key Terms, Review Questions, and Problems 297
Contents 5
PART ThREE SySTEm SECuRiTy 299
Chapter 10 Malicious Software 299
Types of Malicious Software (Malware) 300
Propagation—Infected Content—Viruses 303
Propagation—Vulnerability Exploit—Worms 308
Propagation—Social Engineering—SPAM E-mail, Trojans 313
Payload—System Corruption 315
Payload—Attack Agent—Zombie, Bots 316
Payload—Information Theft—Keyloggers, Phishing, Spyware 318
Payload—Stealthing—Backdoors, Rootkits 319
Countermeasures 321
Distributed Denial of Service Attacks 327
Recommended Reading 332
Key Terms, Review Questions, and Problems 333
Chapter 11 Intruders 336
Intruders 338
Intrusion Detection 342
Password Management 357
Recommended Reading 368
Key Terms, Review Questions, and Problems 369
Chapter 12 Firewalls 373
The Need for Firewalls 374
Firewall Characteristics 375
Types of Firewalls 377
Firewall Basing 383
Firewall Location and Configurations 386
Recommended Reading 391
Key Terms, Review Questions, and Problems 391
APPENDICES 395
Appendix A Some Aspects of Number Theory 395
Prime and Relatively Prime Numbers 396
Modular Arithmetic 398
Appendix B Projects for Teaching Network Security 400
Research Projects 401
Hacking Project 402
Programming Projects 402
Laboratory Exercises 403
Practical Security Assessments 403
Firewall Projects 403
Case Studies 404
Writing Assignments 404
Reading/Report Assignments 404
References 405
Index 412

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