Why WireGuard Is the Best VPN Protocol — And Why NorexVPN Is Built on It

If you've spent any time researching VPNs, you've probably seen the name WireGuard thrown around. It's not hype. WireGuard is a genuine leap forward in VPN technology, and it's the protocol we built NorexVPN on from day one. Here's why.

The Problem With "Legacy" VPN Protocols

For years, the VPN industry ran on OpenVPN and IPSec. They work — but they were designed in a different era.

OpenVPN is battle-tested but bloated. Its codebase clocks in at roughly 600,000 lines of code. That's 600,000 lines that need to be audited for security vulnerabilities, maintained, and compiled on every platform. It's slow to connect, heavier on CPU, and notoriously complex to configure correctly.

IPSec/L2TP has similar baggage. It's deeply embedded in enterprise infrastructure, but it's cumbersome, firewall-unfriendly, and a nightmare to debug when something goes wrong.

Both protocols have served the industry well. But neither was designed for the modern internet.

Enter WireGuard

WireGuard was created by Jason Donenfeld and first published in 2015. In 2020, it was merged directly into the Linux kernel — a signal from the broader security community that this was something special.

The philosophy behind WireGuard is simple: do one thing and do it extremely well.

Lean Codebase — ~4,000 Lines

WireGuard's entire implementation is roughly 4,000 lines of code. Compare that to OpenVPN's 600,000. A smaller codebase means:

  • Fewer places for vulnerabilities to hide. Security researchers can audit the entire protocol in a reasonable amount of time.
  • Easier to maintain. Less code means fewer bugs and faster patches.
  • Faster to run. Less overhead means more of your CPU is doing useful work instead of running protocol machinery.

Modern Cryptography

WireGuard doesn't give you a menu of cipher options. It uses a fixed, modern cryptographic suite:

  • ChaCha20 for symmetric encryption
  • Poly1305 for authentication
  • Curve25519 for key exchange
  • BLAKE2s for hashing

This is a deliberate design choice. Giving users a dropdown of cipher options sounds flexible, but it's actually a liability — misconfigured cryptography is one of the most common sources of VPN vulnerabilities. WireGuard removes that footgun entirely.

Speed

WireGuard is fast. Meaningfully faster than its predecessors.

Because it lives inside the Linux kernel (rather than running in userspace like OpenVPN), data moves through the network stack with far less overhead. Real-world benchmarks consistently show WireGuard outperforming OpenVPN by a significant margin on both throughput and latency — often 2–4x faster depending on hardware.

For a VPN, this matters. Slower protocols eat into the connection speed you're paying your ISP for. With WireGuard, the overhead is minimal enough that most users don't notice a difference between their raw and tunneled speeds.

Near-Instant Handshakes

WireGuard connects in milliseconds. Legacy protocols often take several seconds to complete their handshake and establish a tunnel. WireGuard's handshake completes in roughly one round trip.

This also means roaming just works. Switch from Wi-Fi to cellular? WireGuard seamlessly re-establishes the tunnel without you noticing. Your session stays alive.

Why We Built NorexVPN on WireGuard

We had a choice when designing NorexVPN's architecture. We could have gone with OpenVPN — it's everywhere, there's tons of documentation, and it would have been the path of least resistance.

We chose WireGuard instead, and we're glad we did.

Dedicated Servers, Not Shared Pools

Most VPN services route thousands of users through shared servers. Your traffic mixes with strangers', and you're all trusting the same overloaded machine.

At NorexVPN, every customer gets their own dedicated WireGuard server. That means:

  • Your keys are yours. No one else's traffic touches your server.
  • Consistent performance. You're not fighting for bandwidth with hundreds of other users.
  • Real isolation. If another customer's server gets flagged, it doesn't affect you.

WireGuard's lightweight footprint makes this model practical. Spinning up a dedicated WireGuard instance per customer is efficient — it doesn't require the heavy resource overhead that older protocols would demand.

Simplicity Means Less That Can Go Wrong

WireGuard's minimal design philosophy aligns with how we think about infrastructure. The fewer moving parts, the fewer failure modes. When something does go wrong (and in any system, eventually something will), WireGuard's simplicity makes it far easier to diagnose and fix quickly.

It's Transparent

WireGuard is fully open-source. Its cryptographic assumptions are well-documented and have been reviewed by independent security researchers. We're not betting your privacy on a black-box proprietary protocol — everything about how your traffic is protected is public knowledge.

The Bottom Line

WireGuard is the best VPN protocol available today. It's faster, more secure, and more auditable than anything that came before it. The Linux kernel doesn't merge things lightly — the fact that WireGuard is now part of the kernel is the security community's stamp of approval.

We built NorexVPN on WireGuard because we believe you deserve a VPN that actually performs, with security that doesn't rely on complexity to feel safe.

Try NorexVPN free for 7 days →

Have questions about how NorexVPN handles your connection? Contact us — we're happy to get technical.