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Course Outline

VPN Fundamentals and Architecture

  • VPN types: remote access, site-to-site, client-to-site
  • VPN protocols comparison: WireGuard, OpenVPN, IPsec, SSTP
  • Cryptographic foundations: symmetric and asymmetric encryption
  • PKI and certificate management for VPNs
  • Network architecture considerations for enterprise VPNs

WireGuard Protocol Deep Dive

  • WireGuard design principles and architecture
  • Cryptokey routing and endpoint management
  • WireGuard vs traditional VPNs: performance and simplicity
  • Protocol security analysis and formal verification
  • Platform support and client availability

OpenVPN Architecture and Modes

  • OpenVPN protocol overview: SSL/TLS-based VPN
  • TUN vs TAP device modes
  • UDP vs TCP transport considerations
  • Layer 2 and Layer 3 VPN configurations
  • OpenVPN cipher and HMAC configuration
  • Legacy enterprise support requirements

WireGuard Server Deployment

  • Linux kernel module installation and configuration
  • WireGuard-tools and wg-quick utility
  • Key generation and distribution strategies
  • Server configuration: interfaces, peers, routing
  • Multiple network support and routing tables
  • High availability and load balancing setup

OpenVPN Server Deployment

  • OpenVPN package installation
  • Server configuration file creation
  • Easy-RSA PKI setup and certificate generation
  • TLS key generation for control channel security
  • Client configuration templates
  • Service integration and startup configuration

Client Configuration Management

  • WireGuard client setup: Linux, Windows, macOS, mobile
  • OpenVPN client configuration: OpenVPN Connect, Tunnelblick
  • Configuration file generation and distribution
  • QR code configuration for mobile devices
  • Split tunneling configuration
  • DNS leak prevention and configuration

Authentication and Authorization

  • Certificate-based authentication (WireGuard and OpenVPN)
  • LDAP/Active Directory integration with OpenVPN
  • RADIUS authentication for enterprise integration
  • Two-factor authentication integration (TOTP, hardware tokens)
  • OAuth and SAML integration options
  • Role-based access control implementation

Site-to-Site VPN Configuration

  • Hub-and-spoke vs full mesh topologies
  • WireGuard site-to-site with persistent keepalive
  • OpenVPN site-to-site with shared keys and certificates
  • Dynamic routing over VPN tunnels (BGP, OSPF)
  • Failover and redundancy patterns
  • NAT traversal and firewall traversal

Advanced WireGuard Features

  • wg-easy and web-based management tools
  • WireGuard with containers and Kubernetes
  • WireGuard road warrior setup with roaming clients
  • Pre-shared keys for additional security
  • WireGuard in restricted network environments
  • Multi-hop and cascading configurations

Advanced OpenVPN Features

  • OpenVPN Access Server overview
  • Client-specific configuration and CCD files
  • Push configurations and routes to clients
  • Irwins system and floating IPs
  • Bridging and Ethernet over IP configurations
  • Compression and performance tuning
  • Plugins and scripting

Network Security and Firewall Integration

  • Firewall rules for VPN servers
  • iptables/nftables integration
  • Traffic filtering and access control policies
  • Kill switch implementation for clients
  • Intrusion detection on VPN traffic
  • DDoS protection for VPN endpoints

Monitoring and Logging

  • WireGuard status and peer monitoring
  • OpenVPN status and log analysis
  • Connection tracking and user activity
  • Prometheus/Grafana integration for VPN metrics
  • Alerting on connection anomalies
  • SIEM integration for security monitoring

Scalability and High Availability

  • Load balancing VPN connections
  • Active-passive and active-active HA configurations
  • Session persistence and reconnection handling
  • Geo-distributed VPN servers
  • Capacity planning and performance testing
  • Disaster recovery strategies

Management and Automation Tools

  • Automated user provisioning and deprovisioning
  • Configuration management (Ansible, Puppet, Chef)
  • API-based management solutions
  • Self-service portals for certificate management
  • Policy-based deployment automation

Troubleshooting and Maintenance

  • Common WireGuard issues and solutions
  • OpenVPN troubleshooting methodology
  • Connection debugging and packet capture
  • Performance bottleneck identification
  • Certificate and key management lifecycle
  • Upgrade procedures and backward compatibility

Migration from Commercial VPNs

  • Assessment of commercial VPN replacement candidates
  • Migration planning and phased cutover
  • User training and documentation
  • Hybrid operation during transition
  • Rollback strategies
  • Lessons learned and best practices

Summary and Deployment Checklist

  • Production deployment checklist
  • Security hardening best practices
  • Documentation requirements
  • Ongoing maintenance considerations

Requirements

  • Understanding of TCP/IP networking and subnetting
  • Experience with Linux system administration
  • Knowledge of PKI and certificate concepts
  • Familiarity with firewall and routing concepts
  • Basic understanding of encryption and cryptographic principles

Audience

  • Network Security Engineers
  • System Administrators managing remote access
  • DevOps Engineers building secure infrastructure
  • IT Administrators responsible for workforce connectivity
 21 Hours

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