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DDoS Attack Against Dyn Managed DNS

dynstatus.com

531–540 of 721 posts

Re: DDoS Attack Against Dyn Managed DNS

#531

Earlier quoted context omitted.

It's called a false flag operation, and does happen.

And the ratio of false flag operations to false accusations of false flag operations is about 1:99. Lots of unlikely things "do happen," but if that's the immediate explanation you reach for you're going to be wrong most of the time.

Not suggesting this is a false flag operation, but pointing out the concept as some commenters seemed unfamiliar with it.

Re: DDoS Attack Against Dyn Managed DNS

#532
The DDoS problems, at least those not related to spoofing IPs, could be curtailed if we provide a strong incentive to the ISPs to work on it.

Let's hold the ISPs financially liable for the harmful traffic that comes from their network. If a client reports a harmful IP to the ISP, every bit of subsequent traffic sent from that IP to this client carries a penalty.

Yeah, I know, routing tables are small, yada yada. If we put thumbscrews to the ISPs they will find a way to block a few thousands IPs of the typical botnet, even it requires buying new switches from Cisco & co.

Incentives drive behavior.

Re: DDoS Attack Against Dyn Managed DNS

#533
post #341

Earlier quoted context omitted.

Exactly. You can't know if it is still valid, so you might send clients to an IP that's now controlled by somebody else. Worst case, they know and set up a phishing site. DNS generally has been reliable enough that the trade-off is not worth it.

> Worst case, they know and set up a phishing site. They'd need to specifically gain access to the last known good IP address, which might be different depending on which DNS resolver you talk to (geodistribution, when the record was last updated, etc). I wouldn't really consider that a realistic attack vector.

Withing a small hosting provider this might be pretty simple. Attacker might lease a bunch of new servers and get the IP that was recently released. Then they could launch a DDoS to force address resolution in their favor. It's a bit far-fetched, but a lot of very successful attacks seem that way until someone figures out a way to pull them off.

Re: DDoS Attack Against Dyn Managed DNS

#534

I wanted to provide an update on the PagerDuty service. At this time we have been able to restore the service by migrating to our secondary DNS provider. If you are still experiencing issues reaching any pagerduty.com addresses, please flush your DNS cache. This should restore your access to the service. We are actively monitoring our service and are working to resolve any outstanding issues. We sincerely apologize f…

I had the privilege of being on-call during this entire fiasco today and I have to say I was really really disappointed. It's surprising how broken your entire service was when DNS went down. I couldn't acknowledge anything, and my secondary on-call was getting paged because it looked like I wasn't trying to respond. I was getting phone calls for alerts that wasn't even showing up on the web client, etc. Overall, it caused chaos and I was really disappointed.

Re: DDoS Attack Against Dyn Managed DNS

#536

Earlier quoted context omitted.

Thanks, account created 9 minutes ago.

Just like yer dickish edits. 3 edits. Way to go. Can you not get it correct first time retard?

You can't comment like this on Hacker News. Please read the guidelines:

https://news.ycombinator.com/newsguidelines.html

Re: DDoS Attack Against Dyn Managed DNS

#538
post #68

I'm a GitHub employee and want to let everyone know we're aware of the problems this incident is causing and are actively working to mitigate the impact. "A global event is affecting an upstream DNS provider. GitHub services may be intermittently available at this time." is the content from our latest status update on Twitter ( https://twitter.com/githubstatus/status/789452827269664769 ). Reposted here since some peo…

Another status update from GitHub: "We have migrated to an unaffected DNS provider. Some users may experience problems with cached results as the change propagates."

We're maintaining yellow status for the foreseeable future while the changes to our NS records propagate. If you have the ability to flush caches for your resolver, this may help restore access.

Latest status message: https://twitter.com/githubstatus/status/789565863649304576

Re: DDoS Attack Against Dyn Managed DNS

#539
post #61

Earlier quoted context omitted.

I'm so damn tired of the "host it locally" mentality. Not everyone has the resources to host all of that locally. For example, most open source projects. But even outside of that, we use github for issue tracking, the new project management kanban stuff, a CI server, reading documentation (which is offline, but the online versions are nicer on the eyes), and a ton more. Not to mention that StackOverflow and other dis…

And I'm so damn tired of people complaining about cost to run stuff locally. The true cost of not having some basic stuff setup locally, even for backup purposes is when situation like this happens. It does not take long time or resources to download all of the libraries, with corresponding docs to a local server, or even your laptop. It is not complicated to have all of the new issues sent to an email to have a vers…

If I were running a business, here are the options as I'd see them:

Option A) Spend no money and experience an outage maybe once a year, if that. And the problem works itself out.

Option B) Spend money and gain technical debt to avoid a problem that happens maybe once a year, if that.

Which one would you pick? I mean, maybe if everything you have is closed-source or you are guaranteeing 99.9% uptime to your customers, perhaps option B makes sense. Otherwise, the choice seems fairly obvious to me.

Re: DDoS Attack Against Dyn Managed DNS

#540
post #532

The DDoS problems, at least those not related to spoofing IPs, could be curtailed if we provide a strong incentive to the ISPs to work on it. Let's hold the ISPs financially liable for the harmful traffic that comes from their network. If a client reports a harmful IP to the ISP, every bit of subsequent traffic sent from that IP to this client carries a penalty. Yeah, I know, routing tables are small, yada yada. If w…

Put the thumbscrews on the IoT manufacturers instead, so they don't release widgets with bad security, so the problem is eliminated at its root.

You wouldn't allow car manufacturers to sell cars with faulty airbags, why do we allow device manufacturers to provide plentiful firepower for bad actors?

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