Inline enforcement
Users pass through Access Proxy first. MFA is enforced before protected application routes are reached.
MFA reverse proxy
Use an MFA Reverse Proxy to Protect Existing Web Apps
A reverse proxy can enforce MFA before users reach an application, which makes it useful for legacy apps, custom portals, and internal tools that were not built for modern authentication.
Datawiza Access Proxy provides this pattern with built-in MFA, centralized policy, and audit-ready access logs. Add MFA outside the app instead of rewriting every login flow.
Best-fit comparison
Use an MFA reverse proxy for hard-to-change apps
Older Java, PHP, .NET, ERP, CRM, and custom apps often cannot safely add MFA inside the codebase. A reverse proxy protects them from the outside.
Use Datawiza when you need no-code MFA
Datawiza Access Proxy sits inline, challenges users with built-in MFA, and forwards only approved requests to the application.
Use in-app MFA when you are rebuilding login
If the app is already being rewritten, in-app MFA may fit. If the app must stay stable, proxy-based MFA reduces risk and timeline.
The practical difference
A Reverse Proxy Adds MFA Outside the Application
The protected app does not need to know how MFA works. Datawiza handles the access decision before the request reaches the application server.
Built-in MFA
Use Datawiza built-in MFA methods without requiring the app to integrate with an external identity provider.
Path-aware policy
Apply MFA to the whole app or step up only for sensitive paths, admin areas, or high-risk workflows.
Works across app stacks
Protect apps across data centers, private cloud, public cloud, and hybrid environments with a consistent proxy pattern.
Comparison
MFA Reverse Proxy vs In-App MFA
In-app MFA can work for modern apps that teams can change quickly. A reverse proxy model is better when speed, legacy compatibility, and low disruption matter.
| Criteria | Datawiza Access Proxy | In-App MFA |
|---|---|---|
| Where MFA runs | Datawiza enforces MFA at the reverse proxy layer before application access. | MFA runs inside each application, login controller, or authentication flow. |
| Code impact | No application source-code changes required for MFA enforcement. | Application teams must add, test, and maintain MFA logic. |
| Rollout model | Route one app through the proxy, validate policy, then expand to more apps. | Each app needs a separate implementation and release schedule. |
| Legacy apps | Strong fit for apps that lack native MFA, SAML, OIDC, or modern login patterns. | Can be difficult or risky when the app is old, vendor-managed, or poorly documented. |
| Audit | Access, MFA, and policy decisions can be captured centrally. | Audit quality depends on each app implementation. |
| Best-fit project | Fast MFA for existing web apps without changing application code. | New or heavily refactored applications where MFA belongs inside the app. |
How it works
Add MFA Before Users Reach the App
Datawiza Access Proxy sits between users and protected apps. It verifies the user, enforces MFA, applies policy, then forwards approved requests to the application.
1. Route traffic through the reverse proxy
Place Datawiza Access Proxy between users and the protected web application.
2. Challenge users before app access
Use built-in MFA and policy rules to decide when users must complete additional verification.
3. Forward approved requests
After authentication succeeds, Datawiza forwards approved traffic to the app.
4. Log access decisions
Capture MFA, access, and policy events for audit, operations, and security review.
Use cases
Common MFA Reverse Proxy Use Cases
Add MFA to legacy Java, PHP, .NET, ERP, CRM, and custom web apps
Protect customer and partner portals without rewriting authentication
Add step-up MFA to admin paths or sensitive workflows
Secure internal web apps that do not support SAML, OIDC, or native MFA
Meet MFA requirements while avoiding app-by-app development projects
FAQ
MFA Reverse Proxy Questions
What is an MFA reverse proxy?
An MFA reverse proxy sits between users and a web application. It enforces MFA before forwarding approved requests to the application, so the app does not need native MFA support.
Is an MFA reverse proxy the same as an MFA gateway?
They are closely related. MFA reverse proxy describes the technical architecture. MFA gateway describes the access-control role it plays for users and applications.
Can Datawiza enforce MFA without changing the app?
Yes. Datawiza Access Proxy enforces MFA at the proxy layer, before requests reach the application, so the protected app does not need MFA code changes.
Does this require another IdP?
No. Datawiza includes built-in MFA. You can use Datawiza alone for this use case or connect an identity provider when your environment needs it.
Is this only for legacy applications?
No. Legacy apps are a strong fit, but the same reverse proxy pattern can protect customer portals, partner apps, internal tools, and modern apps where centralized MFA policy is useful.
Next step
See How Datawiza Would Protect One Existing App
Bring one customer portal, B2B app, internal tool, or legacy web application. Datawiza can show where Access Proxy sits, how MFA is enforced, and what changes are avoided.