Virtual Private Network Protocols: WireGuard, OpenVPN, IKEv2 Explained

Virtual Private Network Protocols

The protocol determines how your device creates and maintains the encrypted tunnel to the private network server. Different protocols offer different balances of speed, security, and reliability. Understanding the differences helps you choose the best protocol for your needs.

WireGuard — The Modern Standard

WireGuard is the newest virtual private network protocol, built with only 4,000 lines of code. This minimal codebase makes it easier to audit for security vulnerabilities. WireGuard uses state-of-the-art cryptography including ChaCha20 and Curve25519. It delivers 30-50% faster speeds than OpenVPN and establishes connections almost instantly.

OpenVPN — The Trusted Veteran

OpenVPN has been the industry standard for over 15 years. It runs on any port and supports both UDP (faster) and TCP (more reliable) modes. The open-source code has been extensively audited. OpenVPN is the most configurable private network protocol and works reliably on restricted networks.

IKEv2/IPSec — Mobile Optimized

IKEv2 excels on mobile devices thanks to MOBIKE support, which seamlessly switches between Wi-Fi and cellular without dropping the private network connection. It is natively supported by iOS and macOS. IKEv2 offers excellent speed and security for mobile private networking.