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DDoS Attack Against Dyn Managed DNS

dynstatus.com

191–200 of 721 posts

Re: DDoS Attack Against Dyn Managed DNS

#191
post #188

Just to be clear, this is a DDoS against Dynect's NS hosts, right? I'm confused because of the use of "dyn dns", which to me means dns for hosts that don't have static ip addresses. I'm actually surprised so many big-name sites rely on Dynect, which I hadn't heard of, but more importantly don't seem to use someone else's NS hosts as 2nd or 4th entries.

The company is just called "Dyn", DynECT is a product name, but yes.

Re: DDoS Attack Against Dyn Managed DNS

#193
OpenDNS servers seem the only ones that still work. Kudos.

It may not be the proper action but this kind of soft-fail scenario (use the old DNS until you can contact the DNS servers and get new ones) is much better.

  echo "nameserver 208.67.222.222" | sudo tee -a /etc/resolv.conf

Re: DDoS Attack Against Dyn Managed DNS

#195
post #191
post #188

Just to be clear, this is a DDoS against Dynect's NS hosts, right? I'm confused because of the use of "dyn dns", which to me means dns for hosts that don't have static ip addresses. I'm actually surprised so many big-name sites rely on Dynect, which I hadn't heard of, but more importantly don't seem to use someone else's NS hosts as 2nd or 4th entries.

The company is just called "Dyn", DynECT is a product name, but yes.

Thanks, I was really confused when I read the title "Massive Dyn DNS outage" and how that affects Twitter or Github.

Re: DDoS Attack Against Dyn Managed DNS

#197
post #29

Seems to be impacting POPs in US East most severly. We use Ripe Atlas to assess the impact of DNS outages, and in the past hour have measured about 50-60% recursive query failure from a few hundred probes in that region: https://cloudharmony.com/status-for-dyn

Now impacting multiple regions including both US East and US West with very query failure ratios - 50-70%

Re: DDoS Attack Against Dyn Managed DNS

#198

I can't currently get resolution on www.paypal.com. $ dig @8.8.8.8 www.paypal.com ; > DiG 9.8.1-P1 > @8.8.8.8 www.paypal.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER ;; QUESTION SECTION: ;www.paypal.com. IN A ;; Query time: 29 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Fri Oct 21 12:35:33 2016 ;; MSG SIZE rcvd: 32

Me either. I'm in NYC on TWC. I can't resolve PayPal with Google's DNS or with TWC dns servers.

Also, I'm unable to resolve Twitter on TWC dns.

Re: DDoS Attack Against Dyn Managed DNS

#200

Twitter and Github are still down here in LA (and confirmed on isup.me)

They were up most of the day in here (Prague, Czech Republic, Europe), but it's down now (started about 20 minutes ago). It seems to be another wave of the attack.

Can confirm, europe was up until then
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