Analyzing Computer Security: A Threat / Vulnerability / Countermeasure Approach

11. I Hear You Loud and Clear

Chapter Spotlight

• Interception

• Link and end-to-end encryption

• Virtual private networks

• Public key cryptography

• Key exchange regimes

• Kerberos

Attack: Enemies Watch Predator Video 433

Attack Details 434

Threat: Interception 437

Vulnerability: Wiretapping 441

Countermeasure: Encryption 448

Countermeasure: Virtual Private Networks 452

Countermeasure: Cryptographic Key Management Regime 456

Countermeasure: Asymmetric Cryptography 459

Countermeasure: Kerberos 464

Conclusion 468

Recurring Thread: Ethics—Monitoring Users 471

Exercises 472

In Chapter 9 we examined how to secure a local network against intrusion from the outside in order to protect internal computing and data. At some point, however, most ...