OpenVPN Alternative 2026: Why Businesses Are Switching to NetBird

OpenVPN was the standard for business VPNs for over a decade. But the centralized gateway model is hitting its limits in 2026: complex certificate management, performance bottlenecks and a security model not built for zero trust. NetBird offers a modern alternative – as an open-source mesh VPN with WireGuard that deploys in minutes via the merkaio self-service portal.

Also worth reading: NetBird vs. Tailscale 2026 – The Ultimate Enterprise Comparison · Twingate Alternative 2026 – NetBird vs. Twingate

Quick Comparison: OpenVPN vs. NetBird at a Glance

Table of Contents

• Why Businesses Are Looking for an OpenVPN Alternative
• Architecture Comparison: Gateway vs. Mesh
  • OpenVPN: The Central Gateway Model
  • NetBird: Peer-to-Peer Mesh with WireGuard
  • Architecture Comparison
• Performance: OpenVPN vs. WireGuard
• Security and Zero Trust
  • OpenVPN: Security Through Configuration
  • NetBird: Zero Trust by Design
• Setup and Operations: Certificate Management vs. Self-Service
  • OpenVPN: PKI, Certificates and Manual Configuration
  • NetBird via birdhost: Self-Service in Minutes
• Reverse Proxy: Securely Publish Services
• Cost Comparison
  • OpenVPN Access Server: Per-Connection Pricing
  • birdhost: Flat Rate Without Connection Limits
  • Cost Example: Monthly Costs by Team Size
• GDPR, Data Protection and Compliance
• Migration from OpenVPN to NetBird
• Full Comparison at a Glance
• Decision Guide: When OpenVPN, When NetBird?
  • NetBird / birdhost is the right choice if you:
  • OpenVPN may still make sense if you:
• Conclusion
• Sources

Why Businesses Are Looking for an OpenVPN Alternative

OpenVPN is proven, widely supported and deployed in thousands of companies. But this widespread use reveals increasingly fundamental weaknesses in 2026 that can't be fixed with updates:

1. The Gateway Model Is the Bottleneck

Every connection flows through a central OpenVPN server. This server is simultaneously a single point of failure, performance bottleneck and preferred attack target. If the gateway goes down, the entire network is offline. As user count grows, the server must be scaled vertically – horizontal scaling is practically impossible with OpenVPN.

2. Certificate Management as an Ongoing Burden

OpenVPN relies on a PKI (Public Key Infrastructure) with X.509 certificates. This means: create, distribute, renew, revoke certificates – for every device, every employee. Anyone who has debugged an expired certificate at 3 AM knows what this entails. Easy-RSA simplifies many things but remains a manual process with significant error potential.

3. Performance Losses Due to Protocol Design

OpenVPN operates in userspace and uses TLS/SSL for encryption. The result: significantly higher CPU overhead and measurably lower throughput than WireGuard, which runs directly in the kernel. In practice, this means 20–50% less throughput with higher latency – especially noticeable during remote desktop sessions, video calls and data transfers.

4. No Native Zero Trust

OpenVPN was designed in an era where "inside = trusted" was the norm. Anyone who connects has access to the entire network – unless painstakingly restricted with firewall rules. Granular, identity-based access control, device posture checks and dynamic policies must be retrofitted – if they're even possible.

5. The Industry Is Moving Away from OpenVPN

Mullvad VPN completely dropped OpenVPN support in January 2026. More and more providers and businesses are migrating to WireGuard-based solutions. NetBird itself closed an €8.5 million Series A round in January 2026 – with the stated goal of migrating customers from legacy SSL VPN products like OpenVPN, Sophos and Fortinet.

Architecture Comparison: Gateway vs. Mesh

Architecture determines everything: performance, resilience, scalability and security model. OpenVPN and NetBird take fundamentally different approaches here.

OpenVPN: The Central Gateway Model

OpenVPN follows the classic client-server model. A central VPN server receives all connections, decrypts the traffic and routes it to the internal network.

Employee A ──┐
             ├──► OpenVPN Gateway ──► Internal Network
Employee B ──┘     (Single Point)

This model was the standard for years but brings structural disadvantages:

• Single point of failure: If the gateway goes down, all users are disconnected
• Bandwidth bottleneck: All traffic flows through one server – bandwidth is shared
• No direct communication: Two remote employees communicate via the gateway, never directly
• Complex scaling: More users = bigger server or complex multi-server setup with load balancing

NetBird: Peer-to-Peer Mesh with WireGuard

NetBird builds a decentralized mesh network. Devices connect directly to each other via encrypted WireGuard tunnels – without a central server as bottleneck.

Employee A ◄────────► Employee B
      ▲                      ▲
      │                      │
      ▼                      ▼
Cloud Server ◄──────────► Office NAS

The control plane (management server, signal server, relay) only coordinates connection establishment – actual traffic flows directly between peers. And this control plane is 100% open source.

• No central gateway bottleneck: Existing connections continue even if the management server goes down
• Maximum performance: Direct peer-to-peer connections without gateway detour
• Horizontal scaling: Each new device extends the network – no server upgrade needed
• NAT traversal: Automatic connection even through restrictive firewalls and carrier-grade NAT

Architecture Comparison

Performance: OpenVPN vs. WireGuard

The performance difference between OpenVPN and WireGuard (the protocol behind NetBird) is not marginal – it's fundamental.

OpenVPN operates in userspace and uses OpenSSL for encryption. Every packet goes through multiple context switches between kernel and userspace, creating CPU overhead and latency. The codebase spans over 100,000 lines – a large attack surface and complex audit target.

WireGuard runs directly in the Linux kernel and uses modern, lean cryptography (ChaCha20, Poly1305, Curve25519). The entire codebase consists of roughly 4,000 lines – easily auditable and mathematically verifiable. In practice, this means: up to 70% less latency and significantly higher throughput with lower CPU usage.

For everyday use, this means: remote desktop sessions respond faster, video calls run more smoothly, and file transfers over the VPN reach nearly full bandwidth.

Security and Zero Trust

OpenVPN: Security Through Configuration

OpenVPN offers comprehensive security features – but they must be correctly configured. The protocol's flexibility is simultaneously its greatest weakness: a wrong cipher suite, a forgotten tls-auth parameter, or an outdated OpenSSL version are enough to undermine security.

The access model is network-based: anyone who connects has access to the entire subnet – unless firewall rules restrict access. Granular, identity-based policies require additional tools and significant configuration effort.

Security patches must be applied manually. Migration between OpenVPN versions (e.g., 2.5 to 2.6) regularly brings breaking changes – deprecated ciphers, incompatible certificates and protocol changes that require client updates on all endpoints.

NetBird: Zero Trust by Design

NetBird implements zero trust as a core principle, not an extension:

Identity-based access control: Access rules are defined via a graphical web UI by user groups, devices and specific resources. There's no "network access" – only access to explicitly shared resources.

Posture checks: NetBird verifies the security status of the endpoint before establishing a connection. Is the firewall active? Is an endpoint security agent running? Integrations with Microsoft Intune and SentinelOne enable automated compliance checks.

SSO and MFA: Native integration with all major identity providers – Okta, Azure AD, Google Workspace, Keycloak, Authentik. SCIM provisioning automates on- and offboarding: when an employee leaves the company, network access is automatically revoked.

Automatic encryption: WireGuard encrypts every tunnel by default with the strongest available algorithms – without configuration, without error sources. Additionally, NetBird offers optional post-quantum cryptography protection via Rosenpass.

Setup and Operations: Certificate Management vs. Self-Service

OpenVPN: PKI, Certificates and Manual Configuration

A typical OpenVPN setup involves:

1. Provision and secure server
2. Install and configure OpenVPN Access Server
3. Set up PKI (Easy-RSA or own CA)
4. Generate server certificate and DH parameters
5. Create client certificates for each device
6. Create and distribute .ovpn configuration files
7. Configure firewall rules and routing
8. Set up split tunneling, DNS and NAT
9. Set up monitoring and log rotation

Every new employee requires: generate certificate, create config file, distribute, test. Every expiring certificate requires: renew, redistribute, test. This doesn't scale.

NetBird via birdhost: Self-Service in Minutes

With the merkaio self-service portal (portal.merkaio.com), deploy your own NetBird instance in a few clicks:

1. Create account on portal.merkaio.com
2. Deploy instance – choose plan, region Germany, click
3. Open NetBird dashboard – your own, dedicated instance is ready in minutes
4. Connect devices – install client, login, done

No certificate management. No .ovpn files. No firewall configuration. New employees install the NetBird client and sign in via SSO – access is automatically controlled by defined policies.

7 days free trial – your test instance is automatically provisioned and ready in minutes.

Reverse Proxy: Securely Publish Services

A feature OpenVPN simply doesn't offer: the NetBird Reverse Proxy (from version 0.65). It allows you to securely expose internal services over the internet – without port forwarding, firewall holes, or additional infrastructure like Cloudflare Tunnels or nginx.

• Custom domains – Your own domains with automatic Let's Encrypt certificates
• SSO/OIDC authentication – Only authenticated users get access
• Path-based routing – Multiple services under one domain
• netbird expose – One CLI command for quick, temporary shares
• Full traffic control – Everything runs through your own infrastructure

For businesses that want to securely expose internal tools, customer portals or APIs, this is a significant advantage over OpenVPN, where such scenarios require separate reverse proxy infrastructure.

Cost Comparison

OpenVPN Access Server: Per-Connection Pricing

OpenVPN Access Server is free for up to 2 concurrent connections. Beyond that, it costs from $7 per concurrent connection per month (with annual billing, monthly billing costs more). That sounds affordable at first – but:

• Costs refer to concurrent connections, not users
• Server infrastructure, operations, monitoring and patches come on top
• Personnel costs for PKI management and VPN administration are the biggest hidden items

The true cost of OpenVPN includes: server hosting ($20–100+/month), Access Server license, admin time for certificates and troubleshooting (conservatively 4–8 hours/month) and monitoring setup. For a 50-person company, the total package quickly reaches $500+/month – without anyone really having the VPN infrastructure under control.

birdhost: Flat Rate Without Connection Limits

• Essential: EUR 99.90/month in Germany, 24-hour response from Monday to Friday.
• Business: EUR 199.90/month in Germany, 4-hour response daily from 07:00 to 18:00 CET/CEST, personal onboarding call and reverse proxy with a custom domain.
• Priority: EUR 249.90/month in Germany, 1-hour response daily from 07:00 to 18:00 CET/CEST.
• Enterprise: EUR 449.90/month in Germany, response within 60 minutes around the clock.

All plans are flat rates, cancellable monthly. No per-user fees. No per-connection limits. No hidden costs for servers, monitoring or patches – everything included.

Cost Example: Monthly Costs by Team Size

OpenVPN prices: Access Server Subscription from $7/connection/month with annual billing. Server and admin costs not included. birdhost prices: flat rate, cancellable monthly.

From the very first user, the birdhost flat rate is the better choice – because server operations, monitoring, patches and support are all included alongside the license.

GDPR, Data Protection and Compliance

NetBird / birdhost: Through self-hosting in German data centers, the company retains full control over all data. With managed NetBird hosting from birdhost, the entire infrastructure runs in ISO 27001 certified data centers in Germany. No metadata flows to third parties. Data Processing Agreements (DPA) are available directly in the merkaio portal.

OpenVPN Access Server (Self-Hosted): With self-hosted OpenVPN, GDPR responsibility lies entirely with the operator. This is feasible but requires: hardened server configuration, regular security audits, documented TOMs and a clean DPA chain. Many companies underestimate this effort.

OpenVPN CloudConnexa (Cloud): OpenVPN Inc. is headquartered in Pleasanton, California (USA). Cloud-based services are subject to the US CLOUD Act. For regulated industries in the EU, this can be a dealbreaker.

Migration from OpenVPN to NetBird

Migration from OpenVPN to NetBird can happen gradually – both systems can run in parallel.

Phase 1: Set up test instance (Day 1) Deploy a birdhost instance via the merkaio self-service portal. Free for 7 days, ready in minutes.

Phase 2: Connect pilot group (Week 1) Onboard a small team onto NetBird alongside OpenVPN. Install NetBird client, configure SSO, define access rules. OpenVPN stays active as fallback.

Phase 3: Migrate access rules (Week 2–3) Translate OpenVPN firewall rules into NetBird policies. Switch from network-based rules to identity-based policies – that's the real security gain.

Phase 4: Rollout and decommission OpenVPN (Week 4+) Gradually migrate all employees to NetBird. Only shut down OpenVPN when all users and services have been successfully migrated.

The birdhost team supports the migration – from initial setup through policy configuration to go-live.

Full Comparison at a Glance

Decision Guide: When OpenVPN, When NetBird?

NetBird / birdhost is the right choice if you:

• Want to move away from central gateway bottlenecks
• Need zero trust and identity-based access control
• Want to eliminate certificate management overhead
• Seek predictable costs without per-user or per-connection fees
• Need GDPR-compliant hosting in Germany
• Prefer a managed service over running VPN infrastructure yourself
• Want to securely publish internal services via reverse proxy
• Want to integrate SSO, MFA and automated on-/offboarding
• Want to get started quickly – own instance in minutes via the self-service portal

OpenVPN may still make sense if you:

• Have an existing, stable OpenVPN infrastructure that meets all requirements
• Are deeply integrated with legacy systems that only support OpenVPN
• Have very specific protocol requirements (e.g., TCP fallback through restrictive proxies)
• Have sufficient internal expertise for PKI and VPN management

Conclusion

OpenVPN shaped an entire generation of business VPNs. But the requirements of 2026 – zero trust, distributed teams, multi-cloud infrastructures and strict data protection regulation – exceed what OpenVPN was designed for.

NetBird provides the answer: a modern, open-source mesh VPN built on WireGuard with native zero trust, graphical management and an architecture without a central gateway as bottleneck. Combined with managed hosting from birdhost, businesses get a solution that is more secure, faster and simpler to operate – at a predictable flat rate, hosted in Germany.

• ✓ Predictable flat-rate costs – no per-connection fees
• ✓ GDPR-compliant hosting in Germany
• ✓ Dedicated instances instead of shared cloud
• ✓ Zero operational overhead – setup, monitoring, updates included
• ✓ 7-day free trial

The easiest way to test: Create your own NetBird instance in minutes via the merkaio self-service portal – 7 days free.

Recommended reading: Also read our comparisons NetBird vs. Tailscale 2026 and Twingate Alternative 2026. Coming from a firewall appliance? Fortinet VPN Alternative 2026 · Sophos VPN Alternative 2026.

Sources

• NetBird GitHub Repository (BSD-3-Clause / AGPLv3)
• NetBird Documentation
• NetBird Use Cases: Business VPN
• NetBird Use Cases: Remote Access
• NetBird Site-to-Site Connectivity
• NetBird Reverse Proxy Documentation
• NetBird Posture Checks
• NetBird IdP-Sync & SCIM
• NetBird Series A – EU-Startups (January 2026)
• NetBird Series A – Tech.eu (January 2026)
• How NetBird Makes Network Management Simple – LPI (March 2026)
• WireGuard Protocol Specification
• WireGuard Whitepaper (PDF)
• OpenVPN Access Server Pricing
• OpenVPN Access Server Documentation
• Mullvad VPN: Removing OpenVPN (January 2026)
• Top 5 Alternatives to OpenVPN – NetBird Knowledge Hub
• qwertiko Case Study – NetBird
• birdhost.de – Managed NetBird Hosting