OpenVPN
The mature, endlessly configurable TLS-based tunnel.
How widely is it used?
Common in production todayStill enormous in installed base, but new deployments increasingly start with WireGuard.
How it works
A TLS handshake on a control channel authenticates both sides with X.509 certificates, then a separate data channel carries the encrypted payload over UDP or TCP.
Connects
Device/network → VPN server
Protocols
OpenVPN
Typical users
Individuals, Businesses, Hosting providers
Main use case
General-purpose VPN where compatibility matters most.
Advantages
- Runs on virtually everything
- Fine-grained options and plugin ecosystem
- TCP/443 mode slips through restrictive firewalls
Limitations
- Slower than WireGuard
- Certificate management is real work
- Configuration complexity invites mistakes
Related VPN types
SSL/TLS VPN
Tunnels that ride the same TLS everyone already allows.
Generate configClient-to-Site VPN
Client software dials a gateway — the classic corporate pattern.
Generate configCorporate VPN
Company-operated infrastructure with central identity and policy.
Generate config