Secure Password and Access Management for Associations: Self-Host Centralized Identity and Access Management with Virtualmin, Keycloak, and Two-Factor Authentication in a GDPR-Compliant Way

Learn how, as an association, you can centrally manage passwords and access via Virtualmin and Keycloak and self-host them in a GDPR-compliant way with two-factor authentication.

virtualmingdprassociationpassword managementkeycloak

Associations often face the challenge of managing many members, officials, and external service providers with different access rights. At the same time, they must comply with the General Data Protection Regulation (GDPR). Centralized password and access management with Identity and Access Management (IAM) is the solution. In this article, we show you how to build a secure, self-hosted system with Virtualmin, Keycloak, and two-factor authentication (2FA).

Why centralized IAM is indispensable for associations

In many associations, access credentials are still shared by email or on paper. This is not only insecure but also a data protection risk. Centralized IAM offers:

  • Unified login: One user account for all services (e.g., association management, email, cloud).
  • Role-based access control: Assign each member exactly the rights they need.
  • Central password policies: Enforce strong passwords and regular changes.
  • Audit logs: Log all access so you can react quickly in case of incidents.
  • GDPR compliance: All data remains on your own server in Germany.

Virtualmin as the basis for your hosting

Virtualmin is a powerful open-source server management tool based on Webmin. It allows you to conveniently manage virtual servers, domains, email accounts, and databases via a web interface. For associations, Virtualmin is ideal because it:

  • Is cost-effective (no license fees).
  • Offers easy user management.
  • Integrates seamlessly with Keycloak.
  • Runs on a virtual server of your choice.

You only need a server (e.g., from DezHost) and a domain. You can register the domain directly via DezHost Domains.

Keycloak: The central identity provider

Keycloak is an open-source solution for identity and access management. It handles authentication and authorization for all your applications. The advantages:

  • Single Sign-On (SSO): Log in once, use all services.
  • Support for standards: OAuth 2.0, OpenID Connect, SAML.
  • User management: Create users, groups, and roles.
  • Integration with Virtualmin: Via plugins or LDAP.
  • 2FA: Built-in support for TOTP (e.g., Google Authenticator).

Installation takes place on your virtual server. Keycloak runs as a Java application and requires a database (e.g., PostgreSQL).

Setting up two-factor authentication (2FA)

2FA is a must for secure access. Keycloak supports various methods:

  • TOTP: Time-based one-time passwords via apps like FreeOTP or Google Authenticator.
  • WebAuthn: Hardware keys (e.g., YubiKey) or biometrics.
  • Email code: Less secure, but simple.

Set up 2FA as mandatory for all users. This prevents unauthorized access even if a password is compromised.

GDPR-compliant self-hosting strategy

By self-hosting on your own server in Germany, you retain full control over all personal data. Pay attention to the following points:

  • Server location: Choose a server in the EU (e.g., at DezHost).
  • Encryption: Use TLS for all connections (Let's Encrypt).
  • Backups: Regular encrypted backups.
  • Access logs: Store logs in a GDPR-compliant manner (anonymized, limited retention).
  • Data processing: If you involve external service providers, conclude data processing agreements.

With Virtualmin and Keycloak, you can implement all requirements without becoming dependent on US cloud providers.

Step-by-step integration

1. Set up the server

Rent a virtual server from DezHost and install Virtualmin. Set up your domain.

2. Install Keycloak

Download Keycloak and install it on the server. Configure a PostgreSQL database.

3. Create users and roles

Create a realm for your association in Keycloak. Create users and groups. Assign roles.

4. Enable 2FA

Enable TOTP for all users. Test login with an authenticator app.

5. Connect services

Connect your association applications (e.g., Nextcloud, WordPress) to Keycloak via OpenID Connect. Use SSO.

6. Integrate Virtualmin

Set up LDAP or a plugin so that Virtualmin uses Keycloak as the authentication source.

Conclusion: Security and data protection from a single source

With Virtualmin, Keycloak, and 2FA, you build a professional IAM solution for your association – GDPR-compliant, cost-effective, and independent. Your member data remains on your own server. Start today with a virtual server from DezHost and register your domain.