nanog mailing list archives

Re: Recent NTP pool traffic increase


From: Ca By <cb.list6 () gmail com>
Date: Mon, 19 Dec 2016 18:33:52 +0000

My WAG is that the one plus updated firmeware on that day and they baked in
the pool.

Complete WAG, but time and distributed sources including wireless networks


On Mon, Dec 19, 2016 at 10:30 AM Laurent Dumont <admin () coldnorthadmin com>
wrote:

I also have a similar experience with an increased load.



I'm running a pretty basic Linode VPS and I had to fine tune a few

things in order to deal with the increased traffic. I can clearly see a

date around the 14-15 where my traffic increases to 3-4 times the usual

amounts.



I did a quick dump and in 60 seconds I was hit by slightly over 190K IPs



http://i.imgur.com/mygYINk.png



Weird stuff



Laurent





On 12/17/2016 10:25 PM, Gary E. Miller wrote:

Yo All!



On Sat, 17 Dec 2016 17:54:55 -0800

"Gary E. Miller" <gem () rellim com> wrote:



# tcpdump -nvvi eth0 port 123 |grep "Originator - Transmit Timestamp:"



And I do indeed get odd results.  Some on my local network...

To follow up on my own post, so this can be promply laid to rest.



After some discussion at NTPsec.  It seems that chronyd takes a lot

of 'creative license' with RFC 5905 (NTPv4).  But it is not malicious,

just 'odd', and not new.



So, nothing see here, back to the hunt for the real cause of the new

NTP traffic.



RGDS

GARY


---------------------------------------------------------------------------

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703

      gem () rellim com  Tel:+1 541 382 8588






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