What is ZTNA (Zero Trust Network Access)?

A ZTNA broker sits between the user and internal resources. The typical flow is:

1. The user authenticates with a single encryption key bound to their device.
2. The broker evaluates device posture (patches, antivirus, disk encryption, OS up to date).
3. It checks the policies attached to that identity: which resources, at what times, from which locations.
4. If everything matches, an end-to-end encrypted connection is opened only to that resource. The internal network is never exposed.
5. Every flow is logged for monitoring and audit.

• Identity Provider (IdP): validates who the user is. ConnectaSec uses single-encryption-key authentication, no passwords or SMS.
• Trust Broker: engine that evaluates identity, device and context and authorises the connection.
• Connector / Gateway: agent deployed next to the resources that opens outbound connections to the broker, avoiding open ports.
• Policy Engine: declarative rules per user, group, application, time and geography.
• Telemetry: per-connection logs, key for ENS, ISO 27001 or NIS2 compliance.

• VPN: opens a tunnel to the whole network. A stolen credential gives full access.
• ZTNA: per-resource access. A compromised credential only exposes what that identity could see.
• VPN: requires firewall ports to be open and scannable from the internet.
• ZTNA: outbound connection from the internal network. Infrastructure stays invisible.
• VPN: hard to segment per user and application.
• ZTNA: native micro-segmentation managed from a central panel.

ZTNA fits any scenario where you used to open a port or deploy a VPN:

• Secure remote work for distributed teams.
• Third-party vendor access with time-bounded permissions.
• Site-to-site connectivity without traditional IPsec tunnels.
• Replacing jump hosts, bastions and exposed RDP/SSH.
• Access to private SaaS applications or hybrid cloud workloads.
• Isolation of critical servers (ERP, databases, industrial systems).

• Smaller attack surface: zero open ports, zero infrastructure visible from the internet.
• Easier compliance: per-user and per-resource traceability aligned with ENS, NIS2 and ISO 27001.
• Productivity: the user connects once and reaches everything they are authorised for, with no clunky VPN client.
• Predictable cost: per-device and per-gateway model, no over-engineering.
• Scalability: adding a new device or site is a policy change, not a network project.

1. Inventory users, devices and resources that need remote access.
2. Define policies: who accesses what, from where and with what minimum posture.
3. Deploy the gateway at each site or resource origin. With ConnectaSec this takes minutes.
4. Provision devices with the single encryption key.
5. Progressively shut down the legacy VPN and exposed ports.
6. Monitor flows and refine policies with real usage data.