I want to make a policy authentication for the assigned username list. I pulled the username list from MS Active Directory. I just require the Username that I specify; I do not require any other Usernames.
For example, there are 1000 total usernames in MS Active Directory, but I only require 500 of them, as defined.
I am assuming you are using 802.1x for authentication. Are you using certificate authentication? If so, is there any distinct attribute that would identify these 500 users and not the others? Example, AD Groups, OU, or Location?