On 2016-12-19 11:29 AM, Laurent Dumont 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.
From a source network point of view we see devices come online and hit ~35 unique NTP servers within a few seconds. I'll try to see if I can track down what type of devices they are.
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