[167654] in North American Network Operators' Group
Re: What's going on with NTP?
daemon@ATHENA.MIT.EDU (=?ISO-8859-1?Q?Olivier_Cochard=2DL)
Thu Dec 26 04:23:49 2013
In-Reply-To: <20131225163540.13345.qmail@joyce.lan>
From: =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me>
Date: Thu, 26 Dec 2013 10:23:12 +0100
To: John Levine <johnl@iecc.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Wed, Dec 25, 2013 at 5:35 PM, John Levine <johnl@iecc.com> wrote:
> I have two FreeBSD servers where the NTP daemons are using double digit CPU
> percentages today rather than the usual 0.01%. Restarting them didn't
> help.
>
> The clock on my Android phone is five hours slow. (It's not the time zone,
> I checked that.)
>
> Is this just my special Christmas present, or are there screwed up NTP
> servers?
>
The old NTP server in FreeBSD have a bug that allow to use it for reflexion
DOS attacks:
http://lists.freebsd.org/pipermail/freebsd-current/2013-November/046822.html
Regards,
Olivier
