VPN Protocols Explained: The Complete 2026 Guide
A VPN protocol determines how your data is encrypted and transmitted. The protocol you choose affects speed, security, and compatibility. Here is everything you need to know about every major VPN protocol.
Protocol Comparison
| Protocol | Speed | Security | Stability | Open Source | Best For |
|---|---|---|---|---|---|
| WireGuard | 10/10 | 9/10 | 9/10 | Yes | General use, streaming, gaming, mobile connections... |
| OpenVPN | 7/10 | 10/10 | 10/10 | Yes | Maximum compatibility, firewall bypassing (TCP mod... |
| IKEv2/IPSec | 8/10 | 9/10 | 10/10 | No | Mobile devices, network switching, iOS devices, st... |
| Lightway (ExpressVPN) | 9/10 | 9/10 | 9/10 | Yes | ExpressVPN users who want maximum speed with TCP f... |
| NordLynx (NordVPN) | 10/10 | 9/10 | 9/10 | No | NordVPN users who want maximum speed with enhanced... |
WireGuard
WireGuard is the newest and fastest VPN protocol, designed to be simpler, faster, and more secure than older protocols. With only 4,000 lines of code (compared to OpenVPN's 600,000+), it has a smaller...
OpenVPN
OpenVPN has been the gold standard VPN protocol for over two decades. It is open-source, extensively audited, and supported by virtually every VPN provider. While WireGuard has surpassed it in speed, ...
IKEv2/IPSec
IKEv2 (Internet Key Exchange version 2) paired with IPSec is a VPN protocol known for stability, speed, and excellent mobile performance. Developed by Microsoft and Cisco, it excels at maintaining VPN...
Lightway (ExpressVPN)
Lightway is ExpressVPN's proprietary VPN protocol, designed as a modern alternative to both WireGuard and OpenVPN. Like WireGuard, it uses a minimal codebase (around 2,000 lines of core code) for spee...
NordLynx (NordVPN)
NordLynx is NordVPN's custom implementation of WireGuard that adds a double Network Address Translation (NAT) system to solve WireGuard's static IP privacy concern. It delivers full WireGuard speeds w...