I have a NTP Server running on a Linux (Ubuntu 16.04) box and I also have to securely serve a bunch of Windows Server boxes (2012, 2012 R2 and 2008 R2 mainly). For network equipements and Linux servers I'm using MD5 keys but I don't know how to do something similar on Windows.
I tried to google that issue but all I could find is this thread.
How can I securely sync the Windows boxes with the Linux NTP server ?
Thank you.