VPN Networking

  1. Core Components of VPN Architecture
    1. Tunneling and Encapsulation
      1. Tunneling Fundamentals
        1. Packet Encapsulation Process
          1. Protocol Stack Integration
            1. Header Structure Analysis
            2. Encapsulation Methods
              1. IP-in-IP Encapsulation
                1. GRE Encapsulation
                  1. Layer 2 Encapsulation
                  2. Packet Processing Flow
                    1. Ingress Processing
                      1. Tunnel Transit
                        1. Egress Processing
                        2. Public Network Utilization
                          1. Internet as Transport Medium
                            1. Quality of Service Considerations
                              1. Network Path Selection
                            2. Encryption and Data Protection
                              1. Symmetric Encryption
                                1. Block Ciphers
                                  1. Stream Ciphers
                                    1. Key Distribution Challenges
                                    2. Asymmetric Encryption
                                      1. Public Key Cryptography
                                        1. Key Exchange Protocols
                                          1. Digital Certificate Usage
                                          2. Data Integrity Protection
                                            1. Hash Functions
                                              1. Message Authentication Codes
                                                1. Digital Signatures
                                                2. Perfect Forward Secrecy
                                                  1. Session Key Generation
                                                    1. Key Rotation Policies
                                                      1. Compromise Recovery
                                                    2. Authentication Systems
                                                      1. User Authentication
                                                        1. Password-Based Authentication
                                                          1. Certificate-Based Authentication
                                                            1. Multi-Factor Authentication
                                                              1. Biometric Authentication
                                                              2. Device Authentication
                                                                1. Machine Certificates
                                                                  1. Device Fingerprinting
                                                                    1. Hardware Security Modules
                                                                    2. Mutual Authentication
                                                                      1. Server Verification
                                                                        1. Client Verification
                                                                          1. Trust Establishment
                                                                          2. Authentication Protocols
                                                                            1. RADIUS Integration
                                                                              1. LDAP Integration
                                                                                1. Active Directory Integration

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                                                                            1. Fundamentals of VPN Technology

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                                                                            3. VPN Protocols and Standards