What is Zero Trust Network Access?
A security model that replaces traditional VPNs by granting access to specific applications rather than entire networks, based on continuous identity verification.
Also known as: ZTNA
ZTNA is the modern replacement for corporate VPNs, applying zero-trust principles to network access.
VPN vs ZTNA
- VPN: Connects you to a network. Once connected, you can access many resources.
- ZTNA: Connects you to a specific application. Access is per-app, per-session.
Benefits
- Reduced attack surface (no broad network access)
- Continuous verification (not just at login)
- Easier to manage than VPNs
- Works better with cloud applications
Providers
- Cloudflare Access (Cloudflare Zero Trust)
- Zscaler Private Access
- Google BeyondCorp
- Tailscale (hybrid approach)
Privacy Implication
For personal use, a traditional VPN is still the right tool. ZTNA is primarily relevant for organizations controlling employee access to corporate resources.
Related Terms
Virtual Private Network
A technology that creates a secure, encrypted connection over a less secure network, such as the public internet. VPNs mask your IP address, encrypt your internet traffic, and can make it appear as though you're browsing from a different location.
Zero-Trust Architecture
A security model that assumes no user, device, or network is inherently trusted, requiring continuous verification for every access request.
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