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Chapter 1: IPsec Fundamentals
What is IPsec?
IPsec vs Other VPNs
IPsec Architecture
Key Terminology
Chapter 2: IPsec Protocols
Authentication Header (AH)
Encapsulating Security Payload
Internet Key Exchange
Security Associations
Chapter 3: Encryption & Authentication
Symmetric vs Asymmetric
Cryptographic Algorithms
Hash Functions
Digital Certificates
Chapter 4: IKE Protocol Deep Dive
IKEv1 vs IKEv2
Phase 1 Negotiation
Phase 2 Negotiation
IKE Packet Analysis
Chapter 5: IPsec Configuration
Site-to-Site VPN
Road Warrior Config
Advanced Policies
Vendor Implementation
Chapter 6: Advanced Features
Perfect Forward Secrecy
Dead Peer Detection
NAT Traversal
High Availability
Chapter 7: Troubleshooting
Common Issues
Debug Commands
Packet Analysis
Case Studies
Chapter 8: Best Practices
Security Considerations
Performance Optimization
Monitoring & Maintenance
Design Guidelines
Interactive Tools
VPN Config Generator
Packet Analyzer
Cipher Suite Calculator
SA Lifecycle Visualizer