John, I think this is what you are looking for: 35.8.2.41 serv1.cl.msu.edu 35.8.2.42 serv2.cl.msu.edu 35.8.98.43 serv3.cl.msu.edu Regards, ./brm From: Resotko, John [mailto:[log in to unmask]] Sent: Tuesday, March 10, 2015 1:36 PM To: [log in to unmask] Subject: [MSUNAG] DNS / AD question Good afternoon all, I'm setting up my first WindowsAD server, and I know I'm going to need to put a hole in my firewall for MSU DNS servers to talk to my AD domain controller. Is there a published list of the IP addresses used for those kind of requests? Any additional info would be appreciated. John Resotko Assistant Director, Systems Administration and Support Michigan State University College of Law 648 N. Shaw Lane, Room 208 Law Building East Lansing, MI 48842-1300 email: [log in to unmask]<mailto:[log in to unmask]> phone: 517-432-6836 fax: 517-432-6861 web: http://www.law.msu.edu/ MSU IT Council , Law College representative and board member: https://tech.msu.edu/itcouncil/index.php