Two security models compared — and which one your small business actually needs.
Zero Trust Network Access is a security model built on the principle of "never trust, always verify." Unlike a VPN, which grants network-level access after a user authenticates, ZTNA verifies every single request individually. Each time a user tries to access an application, their identity, device health, and context are checked before access is granted.
ZTNA provides application-level access rather than network-level access. Users only see the specific applications they are authorized to use — everything else on the network is invisible to them. The concept was popularized by Google's BeyondCorp initiative and has since been adopted by large enterprises looking to move beyond perimeter-based security.
In practice, ZTNA requires a robust identity provider, device management policies, and per-application access rules. It is a fundamentally different approach to security that assumes the network itself is hostile and that no user or device should be trusted by default.
A VPN creates a secure, encrypted tunnel between your device and your network. Once you connect, you have access to the resources on that network. It protects the connection itself — ensuring that all data traveling between you and the network is encrypted and safe from interception.
ZTNA takes a different approach. Instead of connecting you to a network, it brokers individual connections to specific applications. There is no network access at all — just application access. Each connection is verified independently, and users never interact with the underlying network infrastructure.
Both VPN and ZTNA encrypt traffic. Both authenticate users. The key difference is in scope and granularity. VPN is network-centric: connect once, access the network. ZTNA is identity-centric: verify every request, access only specific apps. For most small businesses, the network-level protection of a VPN is simpler and more comprehensive.
| Factor | VPN | ZTNA |
|---|---|---|
| Access Model | Network-level | Application-level |
| Setup Complexity | Low | High |
| Cost | $2–14/user/month | $10–30/user/month |
| Best For | General business security | Large enterprise, strict compliance |
| IT Requirements | Minimal | Significant |
| Time to Deploy | Minutes | Weeks to months |
| Encryption | All traffic | Per-application |
| User Experience | Simple, one-click connect | App-by-app access |
For a small business with 10 to 50 employees, VPN provides the right level of protection without unnecessary complexity. Deploying a VPN requires no identity infrastructure, no device management platform, and no per-application access policies. You install the app, connect, and your entire team is protected.
Cost is a major factor. A VPN costs $2 to $14 per user per month. ZTNA solutions typically start at $10 per user and can reach $30 or more, often requiring additional spending on identity providers and device management tools. For a 20-person team, that difference adds up to thousands of dollars per year.
VPN also protects all traffic, not just specific applications. This includes DNS queries, web browsing, email, file transfers, and any other network activity. VPN-based solutions like VeloGuardian also include network-level protections such as DNS filtering and malware scanning — capabilities that ZTNA does not typically provide. Employees understand how to use a VPN: click connect, and you are protected.
ZTNA becomes the right choice in specific scenarios that most small businesses do not face. If your company has 500 or more employees and manages dozens of internal applications with different access requirements, ZTNA's granular controls start to make sense.
Organizations with dedicated security teams, mature identity providers like Okta or Azure AD, and regulatory requirements demanding application-level access logging are good candidates for ZTNA. If you need to prove exactly which users accessed which applications at which times, ZTNA's per-request verification is purpose-built for that.
However, even large organizations rarely deploy ZTNA as their only security tool. It is typically layered on top of existing network security, including VPN, to provide defense in depth for the most sensitive applications.
Many organizations use both VPN and ZTNA together. VPN provides general network protection, encrypts all traffic, and secures remote access for everyday work. ZTNA is layered on top for specific high-sensitivity applications that require per-request verification and application-level access control.
The practical advice for small businesses is straightforward: start with VPN. It is simpler, cheaper, and provides broader protection. If your security needs grow and you find yourself needing application-level access control for specific tools, you can add ZTNA later without replacing your VPN.
VeloGuardian gives you the VPN foundation with built-in DNS filtering and anti-malware — three layers of security in one product. It is the right starting point for any small business, with room to grow as your needs evolve.
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