A traditional hub and spoke VPN breaks down when the network becomes distributed but the access design stays centralised. Teams then face brittle onboarding, difficult device to device connectivity, and more exposure from opening firewall ports or stretching old controls across new use cases. The result is usually slower operations, more exceptions, and a higher support load for security and IT teams.
Why the Hub-and-Spoke Model Stops Fitting Distributed Work
A hub and spoke VPN assumes most traffic should return to a central point before users reach applications or each other. That design worked when offices were the main operating model, but it becomes awkward once teams are remote, cloud-hosted, and peer-to-peer by default. The architectural mismatch, not the VPN itself, is what causes the breakdown.
In practice, the model starts to fight the way people actually work. Remote teams need direct access to SaaS, internal services, collaboration tools, and sometimes each other, while the central tunnel adds latency, routing complexity, and a single choke point for policy and troubleshooting.
Where Operations Get Fragile
The first failure mode is friction. Onboarding becomes brittle because access is now tied to a central network path rather than to the specific application or resource a person needs. Device-to-device connectivity also becomes awkward, because lateral collaboration often depends on the network design instead of being handled cleanly at the application or identity layer.
The second failure mode is exception growth. When teams cannot work cleanly through the hub, organisations compensate by opening ports, widening firewall rules, or extending legacy controls into new use cases. That creates a patchwork of special cases that is harder to audit, harder to support, and easier to misconfigure.
The third failure mode is support load. Security and IT teams end up spending more time resolving access exceptions, diagnosing path issues, and maintaining compatibility with old routing assumptions than improving the actual control posture. A NIST Cybersecurity Framework 2.0 style governance view helps here because it forces teams to treat access design as an operational risk, not just a connectivity choice.
What Changes in the Security Posture
Traditional hub-and-spoke VPNs tend to concentrate trust. Once connected, users often inherit broad network reach that is larger than the business task requires. That increases the blast radius of a compromised credential, a misrouted exception, or an overly permissive firewall rule. The model also makes it tempting to rely on location-based trust instead of continuously verifying the user, device, and session.
That is why zero trust ideas are so often introduced in response to this problem. The issue is not merely performance or convenience, it is that the old network boundary no longer maps to the real trust boundary. NIST SP 800-207 Zero Trust Architecture is relevant because it shifts the design goal from “connect to the network” to “verify and constrain access to the resource.”
From an identity perspective, this is where remote access design starts overlapping with authentication, device posture, and access governance. NHIMG’s Remote Access Identity Guide is useful for understanding how VPN risk, MFA, device posture, and dormant access all fit together when the perimeter is no longer the control point.
Why Modern Teams Usually Replace It, Not Patch It Forever
Most organisations do not really “fix” a hub-and-spoke VPN for distributed work, they reduce dependence on it. The more scalable pattern is to move access decisions closer to the application, use stronger authentication at every entry point, and narrow network-level reach so that connectivity does not equal broad trust.
That said, not every VPN is obsolete. The right question is whether the VPN is still serving a narrow remote-access role or whether it has become the default architecture for everything. If it is doing the second job, the model is usually carrying too much responsibility for too many use cases.
For the access-pattern side of that change, SonicWall VPN Mass Breach via Stolen Credentials shows how remote access can become a high-value entry point when the design depends too heavily on perimeter authentication. For the control-side view, OWASP API Security Top 10 is a reminder that modern access often shifts from network reach to object-level and function-level authorization.
Risk and Threat Considerations
When a distributed workforce is forced through a central VPN hub, the main risk is not just inconvenience. The model can expand trust too widely, create brittle exceptions, and make a single remote access weakness far more valuable to an attacker. That combination is especially dangerous when legacy firewall logic is stretched to cover cloud services and peer collaboration.
Failure mechanism: Compromise of a VPN account, weak MFA coverage, or an overly broad tunnel can give an attacker a large internal foothold, after which lateral movement and rule abuse become easier than in a segmented, resource-based design.
Impact: A single access path can expose multiple services, increase the blast radius of credential theft, and force security teams to maintain compensating controls that are harder to monitor and easier to bypass.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST CSF 2.0, NIST Zero Trust (SP 800-207) and CIS Controls v8 set the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | GV.PO-01 — Policy | Distributed remote access needs policy-driven access design rather than inherited network trust. |
| PR.AA-05 — Identity Management, Authentication, and Access Control | The question concerns remote access control, onboarding, and the trust boundary for users and devices. | |
| Recommendation — Set remote-access policy by resource sensitivity, not by network location. Require strong authentication and limit access to only the resources each user needs. | ||
| NIST Zero Trust (SP 800-207) | 3 — Zero Trust Principles | The model breaks because central network trust no longer matches distributed work patterns. |
| Recommendation — Shift access decisions from the VPN boundary to the protected resource and session context. | ||
| CIS Controls v8 | 6 — Access Control Management | Remote teams need narrower access paths and cleaner exception handling than legacy hub-and-spoke routing. |
| Recommendation — Remove broad remote-access paths and enforce least-privilege access by role and need. | ||
| ISO/IEC 27001:2022 | A.5.15 — Access control | The scenario is fundamentally about how remote access should be governed as the workforce becomes distributed. |
| Recommendation — Define and enforce access rules that match remote work use cases and business need. | ||
Practitioner Guidance
What to prioritise: Start by mapping which remote workflows actually need network-level access and which only need application-level access. The biggest mistake is preserving a broad VPN for convenience while separately building exceptions around it.
What to verify: Check whether onboarding, contractor access, and device-to-device collaboration depend on widening tunnel scope or opening inbound exposure. If they do, the architecture is already telling you where the control is failing.
Decision rule: If access can be expressed as “who may reach which resource under which conditions,” the design should move toward narrower, resource-specific controls rather than a general-purpose network corridor.
Practitioner takeaway: A hub-and-spoke VPN fails when it is used as a substitute for access design; the more distributed the work model becomes, the more the control needs to follow the resource, not the route.
Related resources from NHI Mgmt Group
- What breaks when ML teams rely on traditional application monitoring for model operations?
- What breaks when teams rely on the model provider's safety filters alone?
- What breaks when teams rely on rolling model aliases for production coding workflows?
- What breaks when security teams rely on model output instead of verifying the authorization event?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on September 28, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
