WireGuard is a modern VPN protocol designed to be faster, simpler, and more secure than older options. It builds the encrypted tunnel between your device and the VPN server using state-of-the-art cryptography and a remarkably small codebase, which makes connections quick to establish and easier to audit for security.
What a VPN protocol does
A protocol is the set of rules that creates and secures the tunnel your data travels through. The protocol affects three things you actually feel: connection speed, stability when switching networks, and the strength of the encryption. WireGuard was built to improve all three.
Why WireGuard is fast
WireGuard's codebase is a fraction of the size of older protocols like OpenVPN. Less code means less overhead, so tunnels are established almost instantly and data moves with minimal slowdown. It also handles network changes gracefully — handy when your phone moves between Wi-Fi and mobile data. For the speed implications, see does a VPN slow down your internet?
Why WireGuard is secure
WireGuard uses modern, well-regarded cryptography, including the ChaCha20 cipher for encryption and Curve25519 for key exchange. Its small, transparent codebase is also far easier for security researchers to review than the sprawling code of legacy protocols, which reduces the places bugs can hide.
WireGuard vs older protocols
Compared with OpenVPN and IKEv2, WireGuard generally offers faster speeds and quicker reconnections with strong security. For a full comparison of the trade-offs, read WireGuard vs OpenVPN.
WireGuard in FortisVPN
FortisVPN is powered by WireGuard, giving you fast, low-latency connections for streaming, gaming, and everyday browsing without sacrificing security. Try FortisVPN free for 7 days across up to 10 devices.
Frequently asked questions
Q. Is WireGuard secure? Yes. WireGuard uses modern cryptography and a small, auditable codebase, and it's widely trusted across the VPN industry.
Q. Is WireGuard faster than OpenVPN? In most cases, yes. Its lightweight design typically delivers faster speeds and quicker connections than OpenVPN.
Q. What encryption does WireGuard use? WireGuard uses the ChaCha20 cipher for encryption along with Curve25519 for key exchange and other modern cryptographic primitives.
Last updated: 14 June 2026
