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Azure MFA and RDS 2016 Integration RRS feed

  • Question

  • Hi All,

    We are in the process of configuring Azure MFA with RDS 2016 integration. The MFA component works as I've tested it via loging into the Azure and Office 365 portal.

    The issue we are having is with RDS 2016. We keep getting an error saying the following:

    "The RADIUS Proxy Received a response from server X.X.X.X with an invalid authenticator"

    We followed the following article when configuring this integration: http://microsoftplatform.blogspot.com/2017/02/securing-rd-gateway-with-mfa-using-new.html


    Any help on this would be great

    Monday, November 26, 2018 8:40 AM

Answers

  • Hi,

    In general, user gets authenticated as below:
    1. User log on credential -> RD Gateway
    2. NPS checks the credential against its policy
    3. MFA check and authenticates the credential
    4. RD Gateway checks the credential against its policy 

    Its difficult to identify the details only based on the error message. If possible, please reference below articles to confirm the configuration steps one by one again.

    Step By Step – Using Windows Server 2012 R2 RD Gateway with Azure Multifactor Authentication:
    https://www.rdsgurus.com/step-by-step-using-windows-server-2012-r2-rd-gateway-with-azure-multifactor-authentication/

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

    If problem persists, if possible, please check Event Viewer on relate system to confirm that if there is any relate event has been logged.

    Best Regards,
    Eve Wang

    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Tuesday, November 27, 2018 8:53 AM
  • Issue has now been resolved. Had to remove the RD Gateway and re-install and configure it again.

    MFA is now working correctly.

    Wednesday, November 28, 2018 2:31 AM

All replies

  • Hi,

    In general, user gets authenticated as below:
    1. User log on credential -> RD Gateway
    2. NPS checks the credential against its policy
    3. MFA check and authenticates the credential
    4. RD Gateway checks the credential against its policy 

    Its difficult to identify the details only based on the error message. If possible, please reference below articles to confirm the configuration steps one by one again.

    Step By Step – Using Windows Server 2012 R2 RD Gateway with Azure Multifactor Authentication:
    https://www.rdsgurus.com/step-by-step-using-windows-server-2012-r2-rd-gateway-with-azure-multifactor-authentication/

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

    If problem persists, if possible, please check Event Viewer on relate system to confirm that if there is any relate event has been logged.

    Best Regards,
    Eve Wang

    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Tuesday, November 27, 2018 8:53 AM
  • Issue has now been resolved. Had to remove the RD Gateway and re-install and configure it again.

    MFA is now working correctly.

    Wednesday, November 28, 2018 2:31 AM
  • Hi,

    I am glad to hear that your issue was successfully resolved.

    If there is anything else we can do for you, please feel free to post in the forum.

    Best Regards,
    Eve Wang

    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, November 28, 2018 6:18 AM