MAC auth with NPS - lower and uppercase received RRS feed

  • Question

  • Hello,

    Hi have a 2 NPS servers running that are authenticating MAC addresses for network access.

    Everything was running fine until we added a new switch. This new switch sends the MAC address of the device tryning to connect in UPPERcase. The others are sending the MAC address in lowercase.

    So, the computers on the new switch cannot be authenticated because the password of his MAC AD account is in lowercase.

    And since the Active Directory in not case sensitive for the usernames, I cannot create a second account with a UPPERcase password.

    Is there anyway to tell the NPS to format the MAC address to be lowercase ? Or any other work around ?

    Thanks in advance !

    Thursday, January 16, 2014 2:54 PM


  • Hi,

    Do you mean the password is changed into upper case?

    I have two suggestions about this situation:

    First, change the password of his MAC AD account into upper case. Check if it works.

    Second, it’s wired that the switch send only upper case information. Switches just store and forward frames, they read only up to the frame's hardware address before starting to forward it.Internal data shouldn’t have been modified. You can contact with the manufacture, they may have a solution.

    Thank you.
    • Edited by Daniel JiSun Friday, January 17, 2014 7:02 AM
    • Marked as answer by Daniel JiSun Wednesday, January 22, 2014 5:20 AM
    Friday, January 17, 2014 7:02 AM