Tools / Zero Trust Architecture (ZTA) Interview questions
What is the difference between Zero Trust and VPN-based remote access?
A traditional VPN authenticates a user once, then places their device on the corporate network at the IP layer, effectively granting broad reachability to whatever that network segment can see. Zero Trust remote access, typically delivered via ZTNA, instead brokers a narrow, per-application connection after continuous verification.
| VPN | Zero Trust (ZTNA) |
| Grants network-level access | Grants application-level, per-session access |
| Trust established once at connect time | Trust re-evaluated continuously during the session |
| Internal resources are network-visible | Resources stay invisible until explicitly authorized |
This is why a compromised VPN credential is far more dangerous than a compromised ZTNA session: the former can often reach much of the internal network, while the latter is scoped to specific applications.
A key difference between VPN and ZTNA access is that VPN typically grants:
Resources behind a ZTNA broker are, before authorization:
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