OpenVPN vs WireGuard for Remote Access to an Office Network

If you need staff or admins to reach an office network without exposing RDP, SSH or VNC to the internet, both OpenVPN and WireGuard do the job, and both are free and open source. The short answer: choose WireGuard when you control the clients, want a small config and can allow UDP; choose OpenVPN when you need certificates and user-password checks, TCP 443 as a fallback, or a mature plugin ecosystem. Facts below were checked on 5 November 2026; speed and server load are not tested yet.

The short comparison

How each one authenticates users

This is the biggest practical difference for an office. OpenVPN builds a small PKI (the usual tool is Easy-RSA), issues one certificate per user or device and can add a second factor such as a username and password checked against LDAP, RADIUS or PAM. Revoking a leaver means revoking one certificate, and the server keeps working for everyone else. The control channel can be wrapped in tls-crypt, so packets that do not carry the shared key are dropped before the TLS handshake.

WireGuard has no certificates and no user database. Each peer is identified by a public key, and the server lists every peer with its allowed addresses:

[Interface]
Address = 10.8.0.1/24
ListenPort = 51820
PrivateKey = <server private key>

[Peer]
PublicKey = <laptop public key>
AllowedIPs = 10.8.0.2/32

That is easy to read and audit, but it also means identity is “whoever holds this key”. Linking keys to people, rotating them and removing leavers is something you do yourself, with scripts or a management tool on top.

Network conditions: UDP only versus TCP 443

WireGuard sends every packet over UDP. On home and office networks that is fine. On hotel, guest and some corporate networks that allow only outbound 443, a UDP-only VPN may simply not connect. OpenVPN can run over TCP on port 443, which is why it is still the safer choice for travelling staff. The price of TCP is that a TCP session inside a TCP tunnel can behave badly on a lossy link, so keep UDP as the default and publish a TCP profile only as a fallback.

WireGuard stays silent to unauthenticated packets, so a port scan does not show that a server is listening, and it roams cleanly when a laptop switches from Wi-Fi to LTE. Peers behind home routers use PersistentKeepalive to keep the NAT mapping open.

Setup effort and day-to-day admin

• WireGuard: generate keys with wg genkey | tee server.key | wg pubkey, write one config file, open one UDP port, and bring the tunnel up with wg-quick up wg0. The Windows client installs from MSI packages, which suits Group Policy or Intune.
• OpenVPN: create the PKI, server and client profiles, choose a cipher policy and decide how users authenticate. More steps, but more control. Version 2.7 adds multi-socket servers, the in-kernel DCO data path on Linux and route and DNS updates on connected clients without a reconnect.

Neither needs an agent on the target machines: users connect to the VPN, then open RDP, SSH or file shares by the internal address. If you would rather manage remote machines from a console, see our comparison of MeshCentral and RustDesk.

Security and hardening

• Keep the VPN server patched; OpenVPN 2.7.7 is mainly a security release with fixes in the Windows service.
• Expose only the VPN port, never RDP or SSH. Allow VPN users to reach only the subnets they need: push "route" lines in OpenVPN, AllowedIPs on the server side in WireGuard, plus firewall rules.
• WireGuard has no cipher negotiation, so there is nothing to misconfigure; the trade-off is that changing algorithms means changing the protocol version. OpenVPN’s own comparison page (a vendor with a commercial interest) says WireGuard is not post-quantum by default, so check current documentation if that matters to you.
• Back up the CA key and server config for OpenVPN, and the server private key and peer list for WireGuard. Our remote access security checklist covers MFA, patching and test restores.

Limitations

We have not benchmarked either VPN in our own environment, so we make no throughput or latency claims. Not tested yet. Performance depends on CPU, kernel version, MTU and whether OpenVPN uses DCO. We also do not cover commercial VPN services: this article is about running your own server for remote access.

How to choose

1. Do users sit behind networks that only allow 443? Pick OpenVPN, or run both.
2. Do you need per-user certificates, LDAP or RADIUS login? OpenVPN fits that model natively.
3. Do you manage a small set of devices and want the simplest setup? WireGuard, with a script or spreadsheet to track keys.
4. Do you want zero port forwarding and no server to run? Look at mesh options such as Tailscale, which is built on WireGuard, or ZeroTier; both are shareware (conditionally free) with a free personal tier.
5. Need a browser-only gateway instead of a VPN? See Apache Guacamole and our self-hosted remote access overview.

FAQ

Is WireGuard better than OpenVPN?

Not in every case. WireGuard is simpler and has a fixed modern cipher suite. OpenVPN offers TCP, certificates, user authentication plugins and more deployment options. Pick by your network and user-management needs.

Is WireGuard faster than OpenVPN?

Many people expect so, but we have not measured it, so we will not give numbers. Not tested yet. OpenVPN 2.7 includes a kernel data path (DCO) on Linux and Windows that changes the comparison, so test both on your own hardware.

OpenVPN vs WireGuard for remote access: which should an office use?

Offices with many users and a directory usually prefer OpenVPN for certificate and login control. Small teams and admin-only access often do well with WireGuard.

Can WireGuard run over TCP 443?

No. WireGuard uses UDP only. If you need TCP 443 as a fallback, use OpenVPN, or put WireGuard inside a separate tunnelling layer, which adds complexity.

Are OpenVPN and WireGuard free for business use?

Yes. OpenVPN Community is GPL-2.0 and WireGuard is GPL-2.0 or MIT depending on the component. OpenVPN Inc. also sells commercial products, which are separate from the free Community edition.

Can I run both on one server?

Yes. They use different ports and interfaces, so you can offer WireGuard by default and an OpenVPN TCP 443 profile for restrictive networks.

Last updated: 5 November 2026 · CtrlRemote editorial team. Licence, version and platform details are checked against each developer's official documentation.