How can Multi-Factor Authentication (MFA) enhance RADIUS, Active Directory, or Microsoft Entra ID (Azure ID)?

Multi-factor authentication (MFA) can significantly enhance the security of RADIUS, Active Directory, and Microsoft Entra ID by adding a layer of protection during the authentication process.

  • RADIUS: MFA can be integrated with a RADIUS-hardened VPN authentication in two ways:
    • During the authentication process, users can use an authenticator app (like Google Authenticator) where they input a time-sensitive code when they want to use their VPN.
    • During the enrollment process, onboarding software can require users to use some form of MFA (like a key, authenticator app, or SMS) to obtain an x.509 Certificate that will give them VPN access.
  • Active Directory: MFA can be added to Active Directory to secure VPNs, workstations, servers, on-prem applications, and anything else that needs an extra layer of protection¹². This is because MFA ensures that when a user is logging in to a resource, that resource knows who’s asking for permission to enter and they are who they say they are.
  • Microsoft Entra ID: MFA can be enabled for Microsoft Entra ID to prompt users and groups for additional verification during sign-in. Microsoft Entra ID supports various MFA methods such as texts, biometrics, and one-time passcodes.

By requiring multiple forms of identification, MFA ensures that unauthorized access is prevented even if a user’s password is compromised. This makes MFA a critical security tool in today’s remote work and cloud-based environment.

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