Zero Trust Network Access (ZTNA) is a secure remote access solution that differs from VPNs by providing access only to specific applications or resources, rather than entire networks. It works by authenticating users to the ZTNA service before granting access to applications through a secure, encrypted tunnel, enhancing security and preventing lateral attacks.

Key ZTNA Use Cases #

Authentication and Access #

ZTNA offers granular access based on user identity, unlike VPNs which provide broader network access. It provides location- or device-specific access control, preventing unauthorized or compromised devices from accessing resources.

Holistic Control and Visibility #

Integrating ZTNA into a Secure Access Service Edge (SASE) solution enables organizations to securely access resources and monitor for malicious activity or compromised credentials post-connection.

Benefits of ZTNA #

ZTNA facilitates secure access to applications, data, and services regardless of their location, supporting modern multi-cloud environments. It offers granular, context-aware access to business-critical applications while protecting against potential attackers.

Difference Between VPN and ZTNA #

VPNs provide network-wide access, while ZTNAs grant access to specific resources and require frequent reauthentication. ZTNAs offer advantages in resource utilization, flexibility, agility, and granularity, enhancing security and simplifying security policy management. VPNs and ZTNAs can complement each other to strengthen security, particularly in sensitive network segments.

How is ZTNA implemented? #

ZTNA implementation involves two approaches: endpoint initiated and service-initiated.

Endpoint-initiated ZTNA involves users initiating access from their devices, akin to SDP. An agent on the device communicates with the ZTNA controller for authentication and connection to the desired service.

On the other hand, service-initiated ZTNA utilizes a broker between application and user, with a lightweight connector in front of business applications. Once the outbound connection authenticates the user, traffic flows through the ZTNA service provider, isolating applications from direct access via a proxy. This method is advantageous for unmanaged or BYOD devices.

By implementing ZTNA, RELIANOID can achieve a more secure, agile, and resilient network infrastructure, better protecting their assets and data against modern cyber threats.