Why not run your own NTP server? The stratum1 Raspberry Pi would cost under $100 in hardware and that includes a pretty long external GPS patch antenna that you can stick to the inside of a window.
http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html Though the GPS unit from Adafruit has an external antenna connector and the patch antenna is bitchin. I'm considering combining projects to do a gps synched clock (7 segment displays) that also serves NTP. /brian chee On Thu, Feb 20, 2014 at 3:10 PM, Jeff Mings <je...@lava.net> wrote: > Yes, Brian, the first NTP pool address I listed is from ntp.pool.org, but > it may be farther away /slower depending upon which server in the pool > answers the query. > > Al, I always appreciate your suggestions, but I noticed that the NASA > NTP server is really not supposed to be publicly available: > http://support.ntp.org/bin/view/Servers/PublicTimeServer000270 > Strangely, the ntp.hawaii.edu server doesn't have a stratum rating, and I > know that a few years ago, it oddly jumped forward to the year 2030: > http://support.ntp.org/bin/view/Servers/PublicTimeServer000453 > > In terms of ping time and likely long-term reliability, the NIST > server in LA is looking like my best option : nist1-la.ustiming.org > > Sincerely, > -Jeff > > > > > On 02/20/2014 12:52 PM, Brian Chee wrote: > >> Can't answer that, but Alan Whinery is behind it and it's providing NTP >> for >> UHM ITS facilities. Have you thought of ntp.pool.org? >> >> /brian chee >> >> >> >> On Thu, Feb 20, 2014 at 2:48 PM, Jeff Mings <je...@lava.net> wrote: >> >> That was fast! You are SO on it, Mr. Chee! :D >>> >>> Since you work with the UH IT dept., I'm not surprised you produced >>> a >>> UH server. Is this particular server _reliably_ deployed? I.e., will it >>> likely be consistently available 5 years from now? There are a lot of >>> devices, like phones, that I need to set a good NTP server on that I >>> might >>> not check for several years. >>> >>> Thanks Brian, >>> -Jeff >>> >>> On 02/20/2014 12:44 PM, Brian Chee wrote: >>> >>> ntp1.hawaii.edu canonical name = ntproundtop.hawaii.edu. >>>> Name: ntproundtop.hawaii.edu >>>> Address: 128.171.235.62 >>>> >>>> >>>> On Thu, Feb 20, 2014 at 2:40 PM, Jeff Mings <je...@lava.net> wrote: >>>> >>>> Hi All! >>>> >>>>> After the new NTP DOS vulnerability, a lot of NTP servers are >>>>> changing >>>>> their operation. >>>>> >>>>> I have used the navy's atomic clock at tick.mhpcc.hpc.mil for >>>>> quite >>>>> some time, but it appears that they may be reducing access to it now. >>>>> >>>>> Many of my clients use RoadRunner locally, which doesn't seem to >>>>> have >>>>> a publicly-listed NTP server in this area. I could use the pool from >>>>> CentOS, or even the one from Apple, but I want to make sure I use a >>>>> server >>>>> or pool of them that won't be overwhelmed/useless like the Microsoft >>>>> NTP >>>>> servers. So far, using 0.us.pool.ntp.org looks like a solid choice >>>>> for >>>>> long-term reliability, but nist1-la.ustiming.org yields better ping >>>>> times, and the NIST has a nice status page at >>>>> http://tf.nist.gov/tf-cgi/ >>>>> servers.cgi for checking service. >>>>> >>>>> Any better suggestions? >>>>> >>>>> Thanks, >>>>> >>>>> -Jeff >>>>> >>>>> >>>>> _______________________________________________ >>>>> LUAU@lists.freesoftwarehawaii.org mailing list >>>>> http://lists.freesoftwarehawaii.org/listinfo.cgi/luau- >>>>> freesoftwarehawaii.org >>>>> >>>>> >>>>> >>>> _______________________________________________ >>> LUAU@lists.freesoftwarehawaii.org mailing list >>> http://lists.freesoftwarehawaii.org/listinfo.cgi/luau- >>> freesoftwarehawaii.org >>> >>> >> >> > _______________________________________________ > LUAU@lists.freesoftwarehawaii.org mailing list > http://lists.freesoftwarehawaii.org/listinfo.cgi/luau- > freesoftwarehawaii.org > -- ******************************************** University of Hawaii SOEST Advanced Network Computing Laboratory (ANCL) Brian Chee <c...@hawaii.edu> 2525 Correa Road, HIG 500 Honolulu, HI 96822 Office: 808-956-5797 _______________________________________________ LUAU@lists.freesoftwarehawaii.org mailing list http://lists.freesoftwarehawaii.org/listinfo.cgi/luau-freesoftwarehawaii.org
