This post summarizes the most common VPN (Virtual Private Network) protocols.
VPN protocol
VPN (Virtual Private Network) protocols:
- PPTP
- L2TP
- SSH
- OpenVPN
- IPsec
- SSTP
- IKEv2
PPTP
Point to Point Tunneling Protocol (PPTP).
L2TP
Layer Two Tunneling Protocol (L2TP) is an extension of PPTP.
SSH
You can use Secure Shell (SSH) to set a VPN over the internet.
OpenVPN
OpenVPN is a virtual private network (VPN) system that implements techniques to create secure point-to-point or site-to-site connections in routed or bridged configurations and remote access facilities.
IPsec
Internet Protocol Security (IPSec)
SSTP
Secure Socket Tunneling Protocl (SSTP)
IKEv2
Internet Key Exchange version 2 (IKEv2).
VPN technologies
VPN technologies:
- VRF
- VRF-Lite (Multi-VRF)
- VP6
What is NOT VPN?
SSL is a networking protocol that is used at the transport layer to provide a secure connection between the client and the server over the internet. The SSl connection is to an endpoint, not a whole network.
In conclusion SSL, is not a a VPN.
External references
- “CISSP 9th Edition”, Chapter 12
- Cisco; “VPN and VRF“; Cisco
- archlinux; “VPN over SSH“; archlinux
- “Difference between IP Sec and SSL“