What does ZTNA ensure regarding endpoint access?

ZTNA, or Zero Trust Network Access, operates on the principle of never trusting and always verifying. It ensures that only authorized users and devices can access specific resources across a network. This means that access is granted based on the identity of the user and the security posture of the device attempting to connect, rather than assuming all devices within the network perimeter are safe. As a result, ZTNA limits the attack surface by enforcing strict access controls tailored to individual users and devices.

The other options presented do not accurately reflect the principles behind ZTNA. For instance, the concept of trusting all endpoints by default contradicts the very foundation of Zero Trust security, which emphasizes verifying every access attempt. Additionally, automatically whitelisting devices after initial login would imply a level of trust that ZTNA aims to eliminate, as ongoing verification is crucial. Lastly, while monitoring endpoints in real-time is an important aspect of security, it does not directly address the core function of ZTNA, which is focused on controlling who can access what resources based on strict verification criteria.