What's a reasonably short path to getting OS X to be an NTP client of an NTP server, using autokey?

I tried adding the server's public keyfile (iffpar) and the appropriate commands in ntp.conf in the same way that works on a Linux client, but I'm not getting an authenticated connection from the OS X (10.8.5) client.

Contents of /private/etc/ntp.conf:

crypto pw «clientpassword»
keysdir /private/etc/ntp
server «my_ntp_server» autokey

Files in /private/etc/ntp/ directory:

ntpkey_iffpar_«my_ntp_server»@ -> ntpkey_iffpar_«my_ntp_server».3600540412
  • 1
    I am assuming you mean autokey and not autopath? The last time I checked you need to rebuild OSX's ntp in order to get autokey working.
    – dfc
    Commented Feb 6, 2014 at 2:27
  • Yes, autokey, thank you. Fixed. By "rebuild", do you mean replacing the OS X NTP with one built from some source repo? Is there an OS X-compatible source, somewhere?
    – danorton
    Commented Feb 7, 2014 at 2:54
  • 1
    Yes rebuild means recompile the sources. ntp.org
    – dfc
    Commented Feb 7, 2014 at 19:10


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