Chapter 8 roadmap 8. 1 What is network security? 8.2 Principles of cryptography 8. 3 Message integrity and Digital Signature 8.4 End point authentication 8.5 Securing e-mail 8.6 Securing TCP connections: SSL 8.7 Network layer security: IPsec 8.8 Securing wireless LANs 8.9 Operational security: firewalls and IDS 8: Network Security 8-38: Network Security 8-3 Chapter 8 roadmap 8.1 What is network security? 8.2 Principles of cryptography 8.3 Message integrity and Digital Signature 8.4 End point authentication 8.5 Securing e-mail 8.6 Securing TCP connections: SSL 8.7 Network layer security: IPsec 8.8 Securing wireless LANs 8.9 Operational security: firewalls and IDS