In order to prevent non-AD users to use our DNS server (so they can't translate domain names to IP addresses), I tried to change the ACL on "my server name" in DNS console (sbs 2011 standard)
attached screen shot I took before changing its permissions.
By accident, I unchecked all permissions from ddnsclient (MicrosoftDNS) and not its not on the ACL.
I attached a screenshot I took of this user's permissions before changing it.
a. What's happened when I dont have this entry? Should I take any action in the meanwhile ?
b. How can I recover it? when trying to add manually the "user" ddnsclient or MicrosoftDNS, it does not find any of them.
c. Do you have any tips how to accomplish what I am looking for ? (prevent guests from using the SBS's dns server if they're not authenticated to AD).
Many thanks!