VPN

This post analyzes VPN (Virtual Private Network).

1. VPN (Virtual Private Network)

VPN is a technique that builds a Private Network by using a Public Network. [Figure 1] shows the VPN Architecture. VPN builds a Private Network by establishing a VPN Tunnel over the Public Network. The VPN Tunnel is established by VPN Gateways, and it uses Tunneling techniques such as PPTP (Point-to-Point Tunneling Protocol) and L2TP (Layer Two Tunneling Protocol), and encryption techniques such as IPSec (Internet Protocol Security) and SSL (Secure Socket Layer). A VPN Gateway can be a physical device or a virtual Software device.

2. References

• Virtual Private Network (VPN) : https://www.slideshare.net/Kajal-Thakkar/vpn-14074779
• Virtual Private Network : https://namu.wiki/w/%EA%B0%80%EC%83%81%20%EC%82%AC%EC%84%A4%EB%A7%9D