What is ZTNA (Zero Trust Network Access)?

Understanding the Zero Trust Model

ZTNA, or Zero Trust Network Access, is a security model based on a fundamental principle: never trust by default, always verify. Unlike traditional perimeter security approaches, ZTNA assumes that the network is inherently compromised or vulnerable, and that every user, device, and application must be continuously authenticated, authorized, and monitored.

Why adopt ZTNA?

With the rise of remote work, cloud computing, and cyber threats, traditional security models are no longer sufficient. ZTNA enables:

• Secure access to applications wherever they are (cloud or datacenter)
• A seamless user experience, without complex VPN configuration
• Fine-grained and contextual access control (identity, location, time, device, etc.)
• Reduced attack surface, by hiding resources from unauthorized users

How ZTNA works

A ZTNA system generally relies on the following steps:

1. Strong authentication of the user and their device
2. Evaluation of the request context (location, device posture, time, etc.)
3. Application of a granular access policy defined by the organization
4. Secure access to the application via a ZTNA tunnel

At Chimere, we implement this model with either an agent or agentless approach, depending on your needs.

Typical use cases for ZTNA

• Remote access for employees to the company’s IT system
• Secure connection for external service providers or partners
• Protection of critical applications in a hybrid or multi-cloud environment
• Network segmentation without complex VLANs

ZTNA with Chimere: Security and Simplicity Combined

The Chimere ZTNA solution is designed for organizations that want to regain control over access to their applications, without complexity.
It allows you to:

• Centralize authentication (SCIM)
• Define dynamic access policies
• Deliver granular, encrypted, and auditable access
• Eliminate VPN dependencies and reduce operational costs

Chimere is an intelligent gateway between your users and your applications.
It is part of a modern Zero Trust approach, GDPR-compliant and sovereign.

Learn more

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