This book provides a comprehensive guide to configuring VPN gateways for both site-to-site and remote access deployments, covering fundamental concepts, advanced techniques, and best practices. It explores various VPN technologies, security protocols, authentication methods, and integration strategies essential for securing modern enterprise networks. Designed for network professionals and security practitioners, the book offers detailed insights into planning, implementing, managing, and troubleshooting VPN solutions, ensuring reliable and secure connectivity across diverse environments.