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Identity & Access

What is ZTNA? Zero Trust Network Access Explained

Learn about Zero Trust Network Access (ZTNA), how it replaces traditional VPN, and why organizations are adopting ZTNA for secure remote access.
By VigilbasePublished
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Zero Trust Network Access (ZTNA) is a security technology that provides secure remote access to applications and services based on defined access control policies. Unlike VPNs that grant access to entire networks, ZTNA provides granular, identity-aware access to specific applications, following the zero trust principle of 'never trust, always verify.'

How ZTNA Works

ZTNA creates a secure, encrypted connection between a user's device and a specific application.
1.User identity is verified before any access is granted
2.Device health and security posture is validated
3.Access is granted only to specific applications, not networks
4.Sessions are continuously monitored and can be revoked
5.Applications are hidden from unauthorized users

ZTNA vs. VPN

ZTNA addresses several limitations of traditional VPN solutions.
1.VPN: Grants network-level access; ZTNA: Application-level access
2.VPN: Trust once connected; ZTNA: Continuous verification
3.VPN: Exposes network to connected users; ZTNA: Apps invisible until authorized
4.VPN: Backhauling hurts performance; ZTNA: Direct connections to apps
5.VPN: Complex to scale; ZTNA: Cloud-native scalability

Benefits of ZTNA

Organizations adopt ZTNA for several key advantages.
1.Reduced attack surface by hiding applications
2.Better user experience with direct connections
3.Improved security with continuous verification
4.Easier to manage than traditional VPN
5.Supports hybrid and multi-cloud environments

Key Takeaways

✓ZTNA provides secure, application-specific access without VPN
✓Based on identity verification and device trust
✓Significantly reduces attack surface compared to VPN
✓Essential for modern remote work security

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Frequently Asked Questions

Should I replace my VPN with ZTNA?

For most organizations, ZTNA provides better security and user experience than VPN for remote application access. However, migration should be phased, starting with critical applications. Some use cases may still require VPN capabilities.Internal access and Zero TrustZero Trust principles and access controls

Is ZTNA only for remote workers?

No. ZTNA benefits all users regardless of location. It provides consistent security policies for office, remote, and hybrid workers, and simplifies access management across distributed workforces.Internal access and Zero TrustZero Trust principles and access controls

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