1 min lesson
ZTNA replaces flat VPN trust
Compare two rows from "ZTNA replaces flat VPN trust", then say when each one fits.
Step 1 of 2
ZTNA replaces flat VPN trustidentity-aware proxy + micro-segmentation
A VPN grants broad network access once connected, which is exactly the lateral-movement problem assume-breach warns about. ZTNA puts an identity-aware proxy in front of each application, so a user reaches only the specific apps their identity and device posture allow and reaches nothing else on the network.
- Dimension
- Trust granted
- Flat VPN perimeter
- Broad network access after connect
- Zero-trust ZTNA
- Per-app access, re-checked each request
- Dimension
- Lateral movement
- Flat VPN perimeter
- Easy once inside the tunnel
- Zero-trust ZTNA
- Contained: no implicit network reachability
- Dimension
- Device check
- Flat VPN perimeter
- Often none beyond a cert
- Zero-trust ZTNA
- Continuous posture from MDM/EDR
- Dimension
- Blast radius of stolen creds
- Flat VPN perimeter
- Whole internal network
- Zero-trust ZTNA
- Only what that identity + device is scoped to
| Dimension | Flat VPN perimeter | Zero-trust ZTNA |
|---|---|---|
| Trust granted | Broad network access after connect | Per-app access, re-checked each request |
| Lateral movement | Easy once inside the tunnel | Contained: no implicit network reachability |
| Device check | Often none beyond a cert | Continuous posture from MDM/EDR |
| Blast radius of stolen creds | Whole internal network | Only what that identity + device is scoped to |
Micro-segmentation over a hard shell: many small checks beat one big wall you're trusted behind.