Re: OT: Debian nor OS/X get time from MS's SNTP

[Kent West <westk@acu.edu>]

Mark Ferlatte wrote:

> Kent West said on Tue, Feb 25, 2003 at 12:03:26PM -0600:
>  
>
> > Our Windows admin guy tells me that the time server for campus is 
> > running SNTP (RFC 1769). I've noticed that neither my Debian box nor two 
> > Macintosh OS/X boxes can synch time against our ntp server. However, 
> > they can synch against a Solaris server we have.
> >
> > Does Linux and/or OS/X not work with SNTP?
> >    
>
> SNTP is client-only.  It's just NTP without the server-side of things.  So, if
> the Windows server is running SNTP, it can't serve time to anyone.
>
> Linux and OS/X can run SNTP clients just fine (and, in fact, ntpdate is
> effectively such a client).
>
>  
>
> > How do I determine if my Debian box can work with SNTP,  or if it only 
> > works with NTP? Ditto the Mac.
> >    
>
> Simple test:
>
> What does ntpdate -q your.time.server tell you?  If ntpdate can't talk to it,
> then it's either not running an NTP server, or it's filtering out NTP requests
> from you.
>
> M
>  
This is what my Windows admin says:

> ... here's what MS has to say about the time service running on ntp0:
> 'The Windows Time Synchronization service (W32Time) is a fully compliant implementation of the Simple Network Time Protocol (SNTP) as detailed in IETF RFC 1769.'


And the result of your suggested test:

> westk[@westek]:/home/westk> sudo ntpdate -q ntp0.acu.edu
> server 150.252.128.107, stratum 2, offset -67.056698, delay 0.03380
> 25 Feb 15:14:35 ntpdate[11374]: no server suitable for synchronization found


This got me curious, so I went to my WinXP box and tried to synch 
against ntp0.acu.edu; it failed also. Apparently you're right about our 
ntp server being a client only, or something equally messed up. Time to 
go confront my Windows admin.

Thanks!

Kent