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DNSimple DDOS Attack

dnsimplestatus.com

51–60 of 120 posts

Re: DNSimple DDOS Attack

#51
post #41

Unfortunately, it's not the first time it happens, my app is down and customers unhappy. I always wonder, why is it that someone wants to attack a small company like DNSimple ? Is it that they were blackmailed and did not surrender to the criminals? If so, why would anyone be interested in blackmailing such a small company?

It could also be an attack against one of their customers, again for the same reasons. DNS is a very weak point of the overall system so a very good place to target.

Re: DNSimple DDOS Attack

#52

DNS is so straightforward, so easily distributed, and so fundamental, that I'm always astounded when it's a single point of failure for so many operations. I wonder how many of the affected companies do have redundant appservers and load balancers, but missed this piece of the puzzle...

I'm surprised more places don't run their own DNS. It's not that difficult to do and it means you don't have to rely on another third party for service.

Not that difficult for whom? Great if you have the in-house resources to devote to managing your own DNS (and can't put them to better use elsewhere), but that is not the case for the vast majority of us. The fact that so many of us use PaaS companies like Heroku should be a pretty big indicator that most platform-related engineering is not going to happen in-house under a certain scale.

Re: DNSimple DDOS Attack

#53
post #13

Earlier quoted context omitted.

My site is currently offline from this attack. I am considering that providers like DNSimple simply cannot provide the networking availability to mitigate these kinds of attacks. This is because the solution to these kinds of attacks, often, is that you need a larger pipe than the attackers. Very few people are good at both and having a huge pipe. For web apps, you can use CloudFlare, which does have a bigger pipe an…

Yes, CloudFlare has a full-featured DNS offering, even if you don't use their proxying services.

Which has had a lot of problems this past week:

https://news.ycombinator.com/item?id=8665367

Re: DNSimple DDOS Attack

#54
Does anyone have a simple explanation or link to an article / blog that explains the naked domain / ALIAS "problem" that DNSSimple solves? I recently set up DNS with DNSimple (due to nudging by Heroku) and am affected by this DDoS. I am still struggling to understand the exact nature of this issue. All of Heroku's documentation is pretty cryptic (to me):

"Some DNS hosts provide a way to get CNAME-like functionality at the zone apex using a custom record type. " .. and then on to suggest DNSimple as their first suggestion.

Re: DNSimple DDOS Attack

#55

DNS is so straightforward, so easily distributed, and so fundamental, that I'm always astounded when it's a single point of failure for so many operations. I wonder how many of the affected companies do have redundant appservers and load balancers, but missed this piece of the puzzle...

I'm surprised more places don't run their own DNS. It's not that difficult to do and it means you don't have to rely on another third party for service.

Well if this is an attack to get at one of DNSSimple's customers, running your own DNS would be a much easier target. Which is to say that if you were the target, you would already be hard dead by now rather than struggling as DNSSimple deploys defenses.

I agree though that it is a pretty simple service to run for a small domain.

Re: DNSimple DDOS Attack

#56

If you have an active DNSimple web UI session (or API key) you can change your root nameservers by hitting their web tier directly at 50.31.213.210. We've successfully switched our domains over to nsone.net.

Even without an active session, I was able to get this working by adding an entry to my /etc/hosts file with that IP and dnsimple.com.

Re: DNSimple DDOS Attack

#57
post #19

Anyone switching from DNSimple? I really don't want to, but we've been down for almost 3 hours. I've seen chatter about Cloudfare and it looks pretty good, reviews?

We switched baremetrics.io over to AWS/Route53 as well. It didn't take long (NS switch might still be propagating) but not having ALIAS support is a bit of a drag.

Re: DNSimple DDOS Attack

#58
post #54

Does anyone have a simple explanation or link to an article / blog that explains the naked domain / ALIAS "problem" that DNSSimple solves? I recently set up DNS with DNSimple (due to nudging by Heroku) and am affected by this DDoS. I am still struggling to understand the exact nature of this issue. All of Heroku's documentation is pretty cryptic (to me): "Some DNS hosts provide a way to get CNAME-like functionality a…

http://blog.cloudflare.com/introducing-cname-flattening-rfc-... is a reasonable explanation. fundamentally a CNAME says "when you get queries for this name, go look at this other name instead". among other things, doing a CNAME at the zone apex means resolvers can't then find your NS, MX, or other records at the apex, which is problematic.

Re: DNSimple DDOS Attack

#59

Earlier quoted context omitted.

Yes, CloudFlare has a full-featured DNS offering, even if you don't use their proxying services.

Which has had a lot of problems this past week: https://news.ycombinator.com/item?id=8665367

CloudFlare != CloudFront

Re: DNSimple DDOS Attack

#60
post #16

Earlier quoted context omitted.

A few people do ALIAS style records, DNSMadeEasy and EasyDNS do "ANAME" records which are pretty much the same.

Will these services not have the same thin pipe issue that's currently affecting DNSimple?

Not that I have any reliable info, but what I've heard, DNS Made Easy is a pretty stable and established DNS provider.

They brag about "99.9999% uptime history" at http://www.dnsmadeeasy.com/technology/.

Though they doesn't seem as innovative and nice as DNSimple. Really hope things work out for DNSimple (really like the idea of their beta feature GitHub sync).

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