Network Security

• 1. Asymmetric key systems

• 2. Circuit level gateways

• 3. Application level gateways

• 4. Firewalls

• 5. Access control

• 6. Authentication

• 7. Freshness

• 8. Encryption and integrity

• 9. Link layer encryption

• 10. Implementing encryption in networks

• 11. Hybrid systems

• 12. Vulnerability to attack

• 13. Introduction

• 14. The components of a symmetric key system

• 15. An overview of symmetric key systems

• 16. Principles of encryption

• 17. Tapping into transmission media

• 18. Potential network vulnerabilities

• 19. Important terminology and information for making the most of this section

• 20. Threats to communication networks

• 21. Network security when using your computer

• 22. Background to network security

• 23. Terminology and abbreviations