[AusNOG] NTP Reflection coming in over Equinix IX

[Seamus Ryan]

It has also been happening over NSW-IX the last few days (targeting cloudflare :) ).

http://monitor.nsw.ix.asn.au/cacti/graph.php?local_graph_id=64&rra_id=all

Not sure if they are NTP, but the "big" one on Tuesday appears to have sources like AARNET

http://monitor.nsw.ix.asn.au/cacti/graph.php?local_graph_id=64&rra_id=all

and Ultraserve:

http://monitor.nsw.ix.asn.au/cacti/graph.php?local_graph_id=257&rra_id=all

(large spikes line up with cloudflare's graph)


-          Seamus


From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Sean K. Finn
Sent: Thursday, 13 February 2014 3:37 PM
To: ausnog at lists.ausnog.net
Subject: [AusNOG] NTP Reflection coming in over Equinix IX

Hey All,

I never thought I'd see the day, we're seeing local NTP Reflection attacks come in across Equinix peering!

Thankfully they are very small amounts of traffic but you can see the traffic jump percentage wise.

[cid:image001.png at 01CF28D6.2DA1BB00]


Does anyone have any mitigation stategies across the Equinix IX . (Apart from obvious, i.e. contacting the peer AS's to asking them to nice mitigate at their end and pray, or droping prefix from Equinix completely.)

PS Anyone else on Equinix Syd if you're smashing outbound on NTP please check :)


This is the first time we've seen reflection attack across peering!

What I once considered safe harbour has now been compromised.

Kind Regards,
Sean Finn,
Oz Servers.


________________________________
Premium Australian Hosting Solution Specialists
________________________________
Sean Finn, BInfTech(NetSys)Qld.UT
Oz Servers
e: sean.finn at ozservers.com.au<mailto:sean.finn at ozservers.com.au>
w: http://www.ozservers.com.au<http://www.ozservers.com.au/>
p: 1300 13 89 69



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