It’s the other way around though isn’t it? If your NTP servers are vulnerable then you’re assisting in the attack as your NTP servers are being used to attack the victim. Though I imagine that if your NTP servers were being used you’d bee seeing a large spike in your outbound UDP traffic. On Feb 12, 2014, at 10:33 AM, Bryan Inks <Binks@keyinfo.com> wrote:
Good info, I’ll definitely be looking into this.
But, I’m not being directly attacked. Internap is one of my upstreams, and they are the one that reported that they were being attacked when we called to let them know about the problem.
From: Bill Wichers [mailto:billw@waveform.net] Sent: Wednesday, February 12, 2014 10:27 AM To: Jared Mauch; Bryan Inks Cc: outages@outages.org Subject: RE: [outages] Internap Being DDoS'd
To second Jared on this one, we’ve seen a HUGE increase in NTP-based attacks over the past several weeks with our colo customers. It’s very efficient too – even a pretty low end machine can saturate a 100M link. It reminds me of SQL slammer…
If you haven’t yet checked that you’re safe from this you should. See:
https://www.us-cert.gov/ncas/alerts/TA14-013A and https://www.us-cert.gov/ncas/alerts/TA14-017A
for more info…
-Bill
From: Outages [mailto:outages-bounces@outages.org] On Behalf Of Jared Mauch Sent: Wednesday, February 12, 2014 1:21 PM To: Bryan Inks Cc: outages@outages.org Subject: Re: [outages] Internap Being DDoS'd
Close your NTP amplifiers and prevent the spoofing.. Will solve this one.
Openntpproject.org can help you.
Jared Mauch
On Feb 12, 2014, at 12:45 PM, "Bryan Inks" <Binks@keyinfo.com> wrote:
Just got confirmation from Internap NOC that they are being attacked again.
Causing quite a bit of chaos for my network in SoCal.
I’m having to route over to Level3 to minimize the issue. _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages