Zero Trust Network Access for SMB

Zero Trust Network Access (ZTNA) enforces the principle of never trust, always verify. Instead of granting broad access to a network, ZTNA validates every user, device, and context before granting application-specific access.
The 5 pillars of ZTNA are key elements that provide critical decision factors when evaluating secure access solutions.

What are the 5 pillars of ZTNA?

• Explicit Verification: Multi-factor authentication (MFA) required for all access requests.
• Least Privilege: Users only receive the minimum permissions needed to perform their tasks.
• Assume Breach: Every connection is treated as potentially compromised, reducing lateral movement.
• Micro-Segmentation: Access is restricted to individual applications or services rather than entire networks, containing breaches and preventing threat escalation.
• Continuous Monitoring: Activity is constantly logged and analyzed to detect anomalies in real time, enabling rapid response to suspicious behavior and improving overall threat detection.

By applying these controls, ZTNA can reduce attack surface and improve security posture in cloud-centric environments.

A Virtual Private Network (VPN) provides your business with a securely encrypted internet connection to your private network over the public internet. Specifically, a VPN uses encrypted tunnels to route sensitive data to the right place without prying eyes, and disguises your IP address from internet service providers and unsecured networks.

The question is not whether you should choose a VPN vs. ZTNA. Rather, a VPN lays the foundation for ZTNA.

Zero Trust Network Access (ZTNA) is a security framework that grants users access only to the specific applications they need — nothing more. OpenVPN allows you to reduce the attack surface and create a Zero Trust approach by limiting access to SaaS apps on the internet, protecting web traffic, and authenticating users continuously. The result is a dramatically smaller attack surface: even if credentials are compromised, lateral movement through the network is blocked.

A Zero Trust VPN uses a VPN as the foundation of zero trust network access. Access Server and CloudConnexa can be used to implement a zero trust network access solution that secures your network resources while limiting access to only what is necessary.

Yes. ZTNA is designed to secure access to applications regardless of where they live — whether that's in a private data center, a public cloud like AWS or Azure, or a hybrid environment. Users get consistent, policy-driven access without needing to know (or care) where the app is hosted.

ZTNA requires authentication and the principle of least privilege. Many users find this to be more helpful, as they are not granted access to tools they don’t need, which may confuse their workflow.

ZTNA is a core component of the Secure Access Service Edge (SASE) framework. SASE converges networking and security into a single cloud-delivered architecture, and ZTNA provides the access control layer — ensuring that users, devices, and workloads are verified before connecting to any resource. Think of ZTNA as the "who gets in" engine within a broader SASE strategy.

ZTNA is not turned on with the flip of a switch. Rather, it is a series of technologies that must work together to enforce the core principles of ZTNA. For example, a VPN for authentication and authorization must work with firewalls, secure web gateways, and other applications to fully create the maturity level your organization needs. However, elements of ZTNA, such as CloudConnexa or Access Server, can often be deployed in under one hour.