ABOUTVPNS / FIELD NOTE 05
WireGuard, OpenVPN and IKEv2/IPsec
A plain-English comparison of common VPN protocols without declaring a universal winner.
A protocol is not the entire service
The protocol describes how endpoints establish and protect a connection. A commercial service adds clients, account systems, server operations, support and privacy practices. The same protocol name can appear in very different deployments. Compare compatibility and operational needs rather than treating a badge as proof that a provider is trustworthy.
WireGuard
WireGuard uses a compact, defined set of cryptographic mechanisms and sends its protocol packets over UDP. Its base model identifies peers with public keys. Account enrollment, user-friendly device management and many service features are built around that core. Check how your chosen implementation handles key removal, DNS, routing, reconnects and device changes. The protocol alone is not a complete business identity system.
OpenVPN
OpenVPN provides configurable tunneling with TLS-based authentication options. Deployments can use UDP or TCP, depending on their configuration. Flexibility makes it useful in different environments, but more settings also mean more choices to maintain. Obtain the client profile from the trusted administrator or service, and never accept a replacement certificate solely to dismiss an error.
IKEv2 and IPsec
IKEv2 handles peer authentication and negotiation of security associations used with IPsec. Client support and authentication choices depend on the operating system and gateway. When evaluating a business deployment, check certificate issuance, renewal, revocation and the algorithms required by organizational policy. Use current platform guidance; an old example configuration is not automatically an appropriate production baseline.
What to ask before choosing
Does it work on every required device? Can administrators revoke one lost device without replacing everyone's access? How does it behave on the networks people actually use? Who supplies updates and support? Is there a documented recovery process? Measure performance with a representative workload and record conditions. No protocol is always fastest, and a speed result says little about a provider's data retention.
Sources and Further Reading
Sources support the technical concepts. Examples and checklists are our educational synthesis, not a provider review or a substitute for current deployment guidance.