VPN Protocols Explained (2026)
Your VPN protocol determines your speed, security, and compatibility. Here's everything you need to know to choose the right one.
Protocol Comparison
WireGuard
Since 2020 · Best for: Most usersSpeed
Security
Compatibility
OpenVPN (UDP)
Since 2001 · Best for: Maximum compatibilitySpeed
Security
Compatibility
OpenVPN (TCP)
Since 2001 · Best for: Restrictive networksSpeed
Security
Compatibility
IKEv2/IPSec
Since 2005 · Best for: Mobile devicesSpeed
Security
Compatibility
NordLynx
Since 2020 · Best for: NordVPN usersSpeed
Security
Compatibility
Lightway
Since 2021 · Best for: ExpressVPN usersSpeed
Security
Compatibility
PPTP
Since 1999 · Best for: NEVER useSpeed
Security
Compatibility
Quick Decision Guide
Default choice: WireGuard (or your provider's "Automatic" setting)
Restrictive network/firewall: OpenVPN TCP on port 443
Mobile with frequent Wi-Fi switching: IKEv2 or WireGuard
NordVPN user: NordLynx
ExpressVPN user: Lightway
Maximum privacy: OpenVPN with custom configuration
Deep dive: Read our full VPN Protocols Guide for detailed technical analysis of each protocol.