What Is WireGuard?
WireGuard is a next-generation VPN protocol created by Jason Donenfeld. Unlike OpenVPN's 600,000+ lines of code, WireGuard consists of roughly 4,000 lines, making it significantly easier to audit for security vulnerabilities. It runs inside the Linux kernel for maximum performance and uses state-of-the-art cryptographic primitives including ChaCha20-Poly1305, Curve25519, and BLAKE2s.
WireGuard establishes connections in a single round trip (1-RTT), typically completing the handshake in under 100 milliseconds. This is dramatically faster than OpenVPN, which requires a multi-step TLS handshake that can take several seconds.
Why WireGuard Is Superior
Performance
WireGuard operates at the kernel level rather than in userspace, eliminating context switches and memory copies. Benchmarks consistently show WireGuard achieving 2-4x higher throughput than OpenVPN on the same hardware, with significantly lower CPU usage and battery consumption on mobile devices.
Security
WireGuard uses a fixed set of modern cryptographic algorithms rather than allowing cipher negotiation. This eliminates downgrade attacks and configuration errors. The small codebase has been formally verified and is included in the Linux kernel since version 5.6.
WireGuard and VPNWG
VPNWG is built entirely on WireGuard, enhanced with Amnezia obfuscation to bypass Deep Packet Inspection (DPI). See our technology stack or compare WireGuard vs OpenVPN.