I am trying to do windows authentication on my site because it is only local on our network.
I’m using the website administration tool and selected windows authentication, but when I try to choose users for specific roles it does not give me any users that are on my domain.
My question is how do I synchronize the users on our domain with this tool so that I can give access to specific users?
That tool does not allow you to change User information for Domain Accounts.
You need access your domain controller to administer users when using Windows Authentication.
Once you know what roles you want to restrict, you can add something like this to your web.config