[ntp:questions] AUTHENTICATION

Danny Mayer mayer at ntp.isc.org
Sun Mar 25 17:42:22 UTC 2007

Riccardo wrote:
> Do you know if exist NTP servers (with authentication) which are free ?
> Is't usually necessary to pay for having authentication support from ntp
> servers ?
The pool servers are certainly free as are the published list of stratum
1 and 2 servers with restrictions on use. I don't know of any servers
that support server authentication that are free and provide you with
keys to allow you to authenticate them. Since key distribution is an
Out-Of-Band activity it usually requires manual intervention by someone
at the server end and should presume will cost some amount of money.


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