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A Virtual Private Network (VPN) creates a secure, encrypted connection over a less secure network, such as the internet. Example of use: Accessing your company's internal network remotely.

A VPN works by routing your device's internet connection through the VPN's private server rather than your internet service provider (ISP). Example of use: Browsing the internet anonymously without revealing your IP address to websites.

Remote Access VPN allows individual users to connect to a private network from a remote location. Example of use: Employees accessing their company’s network from home or while traveling.

A Site-to-Site VPN, also known as Router-to-Router VPN, is used when multiple fixed sites need to establish secure connections with each other over the internet. Example of use: Connecting the networks of two geographically distant company offices.

OpenVPN is an open-source VPN protocol known for its flexibility and security. It uses SSL/TLS for key exchange and is able to traverse firewalls and network address translators (NATs). Example of use: Securely connecting to an office network using third-party VPN services.

VPN encryption uses cryptographic algorithms to secure data. Common encryption standards include AES and Blowfish. Example of use: Protecting sensitive data transmitted between a remote worker and the company’s server.

VPN tunneling creates a secure passage where data packets are encapsulated and transmitted. Protocols like L2TP and PPTP are used for tunneling. Example of use: Sending confidential communication over the internet.