Hi all,
On Thu, May 1, 2014 at 9:45 PM, Geoff Shang <ge...@quitelikely.com> wrote: > Hi, > > We have an array of devices and computers. Two Linux machines, a win7 > box, an iMac, a Macbook Pro, an iPad, an iPad Mini, two iPods, three > iPhones and two Nexus 7s. > > We have Internet service from Bezeqint via Bezeq DSL. We got a new router > in February, which will become relevant shortly. > > all our devices are configured to keep time synched automatically. For > the windows 7 machine, we installed a third-party time-keeping software > instead o fallowing Windows to sync once a week. > > all was working fine until I realised a couple of weeks ago that the > windows machine was over 30 seconds slow. Due to the time-keeping software > installed, we were able to see that it hadn't managed to sync the time > since 7 April. > > I initially blamed Windows and the fact that I was running software that > hadn't been updated in ten years. But installing a windows port of NTP > didn't fix things. > > I then realised that my Linux machines weren't keeping time either. They > simply hadn't drifted as far, as Linux is better at keeping time. The macs > weren't either. > > To cut a long lot of investigations short, I determined that I couldn't > sync time using ntpd on port 123. The only way I could get time sync to > work was to use ntpdate with an unprivileged port. > > I did some searching, and found a post (that I apparently didn't bookmark) > that suggested that some sites block NTP traffic in order to prevent > certain types of DOS attacks. Users at such sites are expected to use NTP > server(s) located within the network. > > Since I tried a range of servers in a range of locations with no luck, I > wondered if Bezeqint were doing the same thing. > > I managed to find time.bezeqint.net but it doesn't seem to work either. > > I called Bezeqint and had some difficulty explaining my problem to them in > English. When I did finally manage to get someone who knew what NTP is, > they thought it might be a problem with the router. While this is > possible, we got the router almost two months before the problem started. > > I expect I might get a similar answer if I call them back again, and if I > do call Bezeq about it, I expect them to blame Bezeqint and so-on. > > Since nothing has changed in the last two weeks, I thought I might do > better by asking here. > > So I'm wondering: > > 1. Is anyone else having this problem? > > 2. Has anyone found a server that works? > > 3. Any other ideas I've not thought of? > > I've had a similar problem on my laptop and I solved it by running "ntpdate -u" (Where "-u" tells it to use the unprivileged port which is also used by the "-d" flag which worked) instead of a regular "ntpdate". I'm telling it to inform everybody. Regards, -- Shlomi Fish ------------------------------------------ Shlomi Fish http://www.shlomifish.org/ Chuck Norris helps the gods that help themselves. Please reply to list if it's a mailing list post - http://shlom.in/reply .
_______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
