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ROGERS blocks NTP packets ?

lank
I'm Here A Lot

This may have been happening for a while now but I only noticed today. Is ROGERS blocking all NTP packets ? Because the primary NTP servers at National Research Council of Canada can no longer be queried for time data. These are public stratum 2 servers that have been available for well over 15 years but today no data flows ( or perhap in the last week? ) thus :

 

root@nix:~# ntpdate -B -v time.chu.nrc.ca
29 Aug 11:05:05 ntpdate[5036]: ntpdate 4.2.6p5@1.2349-o Fri Jul 22 17:30:52 UTC 2016 (1)
29 Aug 11:05:13 ntpdate[5036]: no server suitable for synchronization found

root@nix:~# ntpdate -B -v 128.100.100.128
29 Aug 11:06:55 ntpdate[5195]: ntpdate 4.2.6p5@1.2349-o Fri Jul 22 17:30:52 UTC 2016 (1)
29 Aug 11:07:04 ntpdate[5195]: no server suitable for synchronization found

Thus the NTP service fails to bring in data and thus clocks are wrong by a very great deal. Forget milliseconds. We are talking minutes.

 

*Edited Labels*

3 REPLIES 3

Re: ROGERS blocks NTP packets ?

Datalink
Resident Expert
Resident Expert

I wonder if another Dos attack is underway.  You would probably be able to find out by calling them or sending an email.  Here's a link to a May 4 2016 article on that very subject:

 

http://ottawacitizen.com/news/local-news/cyber-attacks-hit-nrc-timelords

 

 

 



Re: ROGERS blocks NTP packets ?

lank
I'm Here A Lot

Well, its an idea but I highly doubt that would affect the stratum 2 NTP servers at University of Toronto which are blocked also.

Re: ROGERS blocks NTP packets ?


@lank wrote:

Well, its an idea but I highly doubt that would affect the stratum 2 NTP servers at University of Toronto which are blocked also.


Lank,

 

Are you still having an issue? I tried looking into this and my cable modem was able to syncrhonize to both NTP hosts you mentionned:

 

root@cmprobe2:/etc # ntpdate -B -v time.chu.nrc.ca
 8 Sep 14:23:20 ntpdate[43376]: ntpdate 4.2.8p8-a (1)
 8 Sep 14:23:26 ntpdate[43376]: adjust time server 209.87.233.53 offset 0.008472 sec
root@cmprobe2:/etc # ntpdate -B -v time.nrc.ca
 8 Sep 14:23:34 ntpdate[43381]: ntpdate 4.2.8p8-a (1)
 8 Sep 14:23:40 ntpdate[43381]: adjust time server 132.246.11.229 offset -0.001757 sec
root@cmprobe2:/etc #
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