Home page logo
/

nanog logo nanog mailing list archives

Re: Need trusted NTP Sources
From: Lyle Giese <lyle () lcrcomputer net>
Date: Sun, 09 Feb 2014 15:19:09 -0600

Look back in the archives and see the problems that erupted when one of the big guys rebooted and came on line with bad time(tock.usno.navy.mil in Nov of 2012). It was talked about in Outages and other lists at the time it happened.


On 02/09/14 14:56, Saku Ytti wrote:
On (2014-02-09 15:45 -0500), Jay Ashworth wrote:

If I'm locked to 2 coherent upstreams and one goes insane, I'm going to
know which one it is, because the other one will still match what I already
have running, no?

Or do I understand NTP less well than I think?
I don't think you can reasonably tell which of the two is the false ticker.
Andriy says your PC would blindly follow one who is in more agreement with
your local lock, and PC's have terrible oscillators (I don't know why, 5EUR
would buy LOT better oscillator).




  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]