Summary
Netbird is primarily a cloud service that provides VPN functionality focusing on the WireGuard® mesh networking (one network) paradigm for ease of use. While it can be deployed on-premises to some extent, it requires all components (both the control and data planes) to be publicly exposed. This creates a broader attack surface and represents a single point of failure.
In contrast, Defguard is an on-premises-first Enterprise VPN solution, built for secure remote access using a secure-by-design architecture and service segmentation. Its control plane, which integrates with external SSO and IdP solutions, is never exposed to the public internet. This ensures that all public-facing components remain stateless and secure, while also delivering the centralized network management that Enterprise customers expect.
When to choose Defguard
Secure-by-Design: Why Isolating the Control Plane Matters
Whether using the cloud or the on-premises version, Netbird requires all components to be launched within a single network (e.g., on a single machine or a single Docker network) and then collectively exposed to the public internet.
This approach shares the same inherent weakness as the SSL VPN architecture now being phased out by most enterprise vendors (see Fortinet’s move to IPsec). Most attacks do not target the VPN protocol itself, but rather the management endpoints of these solutions. In the case of SSL VPNs, there are two primary vulnerabilities:
- Application Layer Exposure: Since SSL VPNs operate at the application layer, exposing the VPN on a firewall means the main VPN data plane is publicly accessible.
- Control Plane Exposure: SSL VPNs require configuration portals (for user/device enrollment and provisioning), which necessitates exposing the VPN control plane to the public.
Despite using the superior WireGuard® protocol, Netbird follows this same risky security model by exposing both the control and data planes to the public internet. This approach provides more the ease of architecture, deployment and feature development but is not expected in Enterprise environments.
In contrast, Defguard was designed with security as the most important factor delivering the secure-by-design (SBD) approach (detailed information about SBD) where the most differentiating factor is segmentation of systems and components.
The communication between the components is designed to prevent lateral movement from public (proxy, gateway) to private (core) network segments. This can be achieved in several ways on the network level, e.g. through separate VLANs or multiple firewalls.
The segmented approach significantly reduces attack surface and makes the system more resilient.
Advanced Identity Security & Native MFA
While Netbird only supports MFA through external SSO providers, Defguard goes further. In addition to supporting the same external SSO providers, Defguard enables various other MFA methods, including:
- TOTP (Authenticator Codes)
- Email Codes
- Mobile App Biometrics
- Multi-device Desktop Authentication with Mobile Biometrics
Furthermore, while Netbird’s authentication only handles peer configuration, Defguard’s MFA provides multiple security layers, including the exchange of additional security keys.
Memory Safety: Why Rust is the Gold Standard for Security
Netbird is implemented in Go, whereas Defguard is written in Rust—a memory-safe language favored for security and recommended by nearly all top-tier security organizations worldwide:
- NSA Memory Safety: nsa.gov
- CISA/NSA: The Case for Memory-Safe Roadmaps (PDF)
- DARPA TRACTOR: Translating All C to Rust
- ANSSI Rust Guide: github.com/ANSSI-FR/rust-guide
Mesh vs. Centralized: Architecture Matters for Security & Compliance
Mesh networking (used by Netbird) provides flexibility and ease of use, but is often unsuitable for Enterprise environments for several reasons:
- Flat Network Structure: All devices are assigned to a single shared IPv4 network.
- Access Control Complexity: Traffic management relies entirely on ACLs (Access Control Lists) defined within the mesh graph to determine which peers can communicate. This can become difficult to audit and manage at scale.
- No Centralized Traffic Inspection: Peer-to-peer traffic bypasses corporate firewalls and IDS/IPS systems, creating major security blind spots where traffic cannot be analyzed for malware or data exfiltration.
- Complex Compliance and Auditing: Gathering the unified, reliable network logs required for enterprise compliance frameworks (like SOC2 or ISO27001) is incredibly difficult across a decentralized network.
- Higher Risk of Lateral Movement: If a single endpoint is compromised, the flat, peer-to-peer nature of a mesh network makes it much easier for an attacker to move laterally to other devices or servers.
- Difficult Troubleshooting: Diagnosing direct peer-to-peer connection issues (like NAT traversal failures) is notoriously complex for IT helpdesks since there are no central gateway logs to rely on.
- Endpoint Resource Overhead: Maintaining multiple active cryptographic tunnels and routing tables simultaneously drains battery life and consumes unnecessary CPU/memory on lightweight or mobile devices.
Defguard adheres to enterprise standards by providing centralized network management (which directly resolves the issues listed above), while also delivering several key network advantages, such as:
- Strict Network Segmentation: Unlike flat mesh networks, Defguard allows you to isolate traffic and enforce true Zero Trust principles, ensuring users only reach the specific subnets or services they are authorized to access.
- Centralized Traffic Inspection: Because traffic flows through defined gateways, it can be seamlessly integrated with enterprise firewalls, IDS/IPS, and DLP tools for comprehensive threat monitoring.
- Simplified Compliance Logging: A centralized architecture makes it straightforward to collect the unified access and connection logs required for SOC2, ISO27001, and NIS2 compliance audits.
- Agentless Access to Internal Resources: You can route traffic to entire internal subnets without needing to install a VPN client on every single target server, database, or legacy device.
- Reliable IT Troubleshooting: Helpdesk teams have a single point of truth (the gateway logs) to quickly diagnose connectivity or authentication issues, avoiding the nightmare of debugging peer-to-peer NAT traversal.
High Availability
While Netbird supports running multiple Relay/STUN servers via manual configuration—allowing clients to randomly select a relay and automatically fail over if one goes down—running the core control and data plane servers concurrently for High Availability (HA) is not officially supported out-of-the-box for self-hosters. Instead, the standard approach is to rely on orchestration tools like Kubernetes or Docker Swarm to monitor container health and instantly spin up a replacement if a crash occurs.
Defguard (from version 2.0) provides Active-Active High Availability of Edge and Gateway components with easy UI management and automated adoption.
Enterprise Networking & Structure
By taking advantage of a centralized networking model, Defguard delivers several advanced features unavailable in Netbird.
Defguard’s structure reflects a typical corporate environment through VPN Locations, allowing you to control access and connect to specific sites directly.
Unlike Netbird, which displays a flat ‘peer’ list that becomes nearly impossible to manage with thousands of users and devices, Defguard maintains a clear, hierarchical User and Device structure. This enterprise-ready approach includes:
- Multiple IPv4 & IPv6 VPN Networks: Devices can be assigned to multiple distinct VPN networks simultaneously, with dedicated IP addresses in each.
- Static IP Assignment per User/Device: Administrators gain granular, network-level control by assigning permanent static IP addresses to specific devices across different networks.
When to choose NetBird
When Mesh Shines: The Appeal for Small Teams
While we’ve discussed the limitations of mesh networking for large enterprises, it’s only fair to acknowledge why it became so popular in the first place. For smaller, agile teams without dedicated IT departments, the mesh paradigm (like Netbird or Tailscale) offers some very compelling features:
- Zero Infrastructure to Manage: Small teams don’t need to deploy, host, or maintain a central VPN gateway or firewall. The “network” is simply the software running on the users’ devices.
- Direct Peer-to-Peer Speed: Because devices connect directly to each other rather than routing traffic through a central server, latency is often lower, which is great for direct file sharing or accessing a colleague’s local dev environment.
- Effortless NAT Traversal: Mesh solutions excel at punching through restrictive home routers, hotel Wi-Fi, or cellular networks.
- Plug-and-Play Connectivity: By placing all devices on a single, flat IP network, setup is almost instant. A small team can just install the app, log in, and immediately “see” every other device on the network.
Device Trust & Posture Verification
Netbird’s Posture Checks are a core component of its Zero Trust Network Access (ZTNA) framework, designed to verify a device’s security compliance before granting network access. By evaluating real-time telemetry such as operating system versions, geographic location, and the presence of specific security processes or certificates Posture Checks ensure that only healthy, authorized devices can connect to sensitive resources.
In Defguard Device Posture Checks are planned in version 2.1 (early Q2 2026).
DNS: Automation & External Integration
Netbird simplifies network navigation through its Magic DNS feature, which automates peer-to-peer hostname resolution and eliminates the need for manual host file management. This system is further enhanced by support for split-DNS routing, allowing administrators to precisely direct internal domain queries to specific private servers while keeping other traffic on public paths. Beyond internal naming, Netbird also offers the flexibility to configure Custom DNS resolvers, enabling teams to integrate external or existing corporate DNS servers to ensure consistent and secure name resolution across the entire distributed mesh network.
In Defguard Split DNS and Magic DNS is planned in version 2.3.
Secure Service Exposure: Integrated Application Proxying
NetBird streamlines the delivery of internal resources through its Service Exposure functionality, leveraging an integrated reverse proxy to securely publish private applications. This feature allows administrators to map internal web services to specific hostnames accessible only within the encrypted mesh, effectively eliminating the need to open vulnerable ports to the public internet. NetBird enables seamless access to internal tools and dashboards with ease which is a great feature for development teams.
Automated MDM Integration
Netbird provides MDM Integration, supporting industry-standard platforms like Kandji, Jamf, and Microsoft Intune. This feature automates the synchronization of device metadata, allowing administrators to maintain a real-time, unified inventory of all endpoints within the mesh network.
Automated Threat Response: EDR Integration
Netbird integrates with leading EDR platforms (such as CrowdStrike and SentinelOne) to leverage real-time threat telemetry. By continuously verifying the status of the local EDR agent, Netbird can automatically restrict or revoke network access for any endpoint that becomes infected or compromised, providing an essential layer of automated threat containment across the distributed mesh.
Summary
Choose Defguard when you need enterprise-grade security: isolated control plane, centralized traffic inspection, compliance-ready logging (SOC2, ISO27001, NIS2), and hierarchical user/device structure. Ideal when reducing attack surface and meeting audit requirements are non-negotiable.
Choose NetBird when you’re a small team prioritizing zero infrastructure, direct peer-to-peer speed, and plug-and-play connectivity—and when Device Posture, Magic DNS, Service Exposure, MDM, or EDR integration are essential today.
Both use WireGuard®. The difference is architecture, security model, and target environment. For enterprises, Defguard’s secure-by-design approach and control plane isolation deliver the resilience and visibility that compliance and security teams expect.
