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Security

466VPN Fundamentals and Purpose
467Remote Access VPNs
468Site-to-Site VPNs
469Client-Based vs Clientless VPNs
470Full Tunnel vs Split Tunnel
471VPN Use Case: Privacy and Anonymity
472VPN Use Case: Secure Cloud Connectivity
473VPN Protocols Overview
474IPsec Architecture and Protocol Suite
475Security Associations (SA) and Security Policy Database
476IPsec Modes: Transport vs Tunnel
477Authentication Header (AH) Protocol
478Encapsulating Security Payload (ESP)
479Internet Key Exchange (IKE) Phase 1
480Internet Key Exchange (IKE) Phase 2
481IPsec Cryptographic Algorithms and Cipher Suites
482NAT Traversal (NAT-T) in IPsec
483Perfect Forward Secrecy in IPsec
484IPsec Troubleshooting and Common Misconfigurations
485TLS VPNs: Architecture and Differences from IPsec
486OpenVPN Architecture and Components
487OpenVPN Cryptographic Configuration
488OpenVPN Authentication Methods
489OpenVPN Network Topologies: Routed vs Bridged
490OpenVPN Server Hardening and Security Best Practices
491Client Configuration and Split Tunneling
492Troubleshooting and Monitoring OpenVPN Connections
493WireGuard Protocol Design and Cryptographic Simplicity
494WireGuard Peer Configuration and Key Management
495WireGuard Network Architecture and Routing
496WireGuard Performance and UDP Characteristics
497WireGuard Security Model and Attack Surface
498WireGuard Deployment Best Practices and Monitoring
499SSH Tunneling Fundamentals
500Local Port Forwarding (-L)
501Remote Port Forwarding (-R)
502Dynamic Port Forwarding and SOCKS Proxy (-D)
503SSH Tunnel Security and Authentication
504SSH Configuration for Tunneling
505ProxyJump and Multi-Hop SSH Tunneling
506SSH Tunnel Persistence and Troubleshooting
507VPN Leak Types and Detection
508DNS Leak Prevention
509IPv6 Leak Mitigation
510Kill Switch Mechanisms
511Split Tunneling Security Risks
512VPN Traffic Correlation Attacks
513VPN Client Security Hardening

Security

466VPN Fundamentals and Purpose
467Remote Access VPNs
468Site-to-Site VPNs
469Client-Based vs Clientless VPNs
470Full Tunnel vs Split Tunnel
471VPN Use Case: Privacy and Anonymity
472VPN Use Case: Secure Cloud Connectivity
473VPN Protocols Overview
474IPsec Architecture and Protocol Suite
475Security Associations (SA) and Security Policy Database
476IPsec Modes: Transport vs Tunnel
477Authentication Header (AH) Protocol
478Encapsulating Security Payload (ESP)
479Internet Key Exchange (IKE) Phase 1
480Internet Key Exchange (IKE) Phase 2
481IPsec Cryptographic Algorithms and Cipher Suites
482NAT Traversal (NAT-T) in IPsec
483Perfect Forward Secrecy in IPsec
484IPsec Troubleshooting and Common Misconfigurations
485TLS VPNs: Architecture and Differences from IPsec
486OpenVPN Architecture and Components
487OpenVPN Cryptographic Configuration
488OpenVPN Authentication Methods
489OpenVPN Network Topologies: Routed vs Bridged
490OpenVPN Server Hardening and Security Best Practices
491Client Configuration and Split Tunneling
492Troubleshooting and Monitoring OpenVPN Connections
493WireGuard Protocol Design and Cryptographic Simplicity
494WireGuard Peer Configuration and Key Management
495WireGuard Network Architecture and Routing
496WireGuard Performance and UDP Characteristics
497WireGuard Security Model and Attack Surface
498WireGuard Deployment Best Practices and Monitoring
499SSH Tunneling Fundamentals
500Local Port Forwarding (-L)
501Remote Port Forwarding (-R)
502Dynamic Port Forwarding and SOCKS Proxy (-D)
503SSH Tunnel Security and Authentication
504SSH Configuration for Tunneling
505ProxyJump and Multi-Hop SSH Tunneling
506SSH Tunnel Persistence and Troubleshooting
507VPN Leak Types and Detection
508DNS Leak Prevention
509IPv6 Leak Mitigation
510Kill Switch Mechanisms
511Split Tunneling Security Risks
512VPN Traffic Correlation Attacks
513VPN Client Security Hardening

← Security

Lesson 466 of 3,052·11. Network Security - VPNs and TunnelingPro lesson

VPN Fundamentals and Purpose

Understand what VPNs are, how they create secure tunnels over untrusted networks, and their core security properties.

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