Network Solutions' DNS was down • Hacker News Board

Re: Network Solutions' DNS was down

#21

Post by esw » Wed, Jul 17, 2013, 2:57 PM UTC

pilif wrote: post #16

This is one of the reasons why I self-host DNS. Even with tons of users, the resources it takes to serve DNS requests pale compared to what you have to put behind your application servers. Of course if you are using a CDN to provide your users with better locality, you might want to look into a service that provides localized DNS distribution, but the inherent caching feature of the DNS protocol might make that an un…

This is workable for small sites, but are you really equipped to deal with a denial of service attack? There are plenty of small DNS providers (Zerigo comes to mind) that can't even stay up during attacks.

Re: Network Solutions' DNS was down

#22

Post by mgkimsal » Wed, Jul 17, 2013, 2:57 PM UTC

dholowiski wrote: post #19

pilif wrote: post #16

This is one of the reasons why I self-host DNS. Even with tons of users, the resources it takes to serve DNS requests pale compared to what you have to put behind your application servers. Of course if you are using a CDN to provide your users with better locality, you might want to look into a service that provides localized DNS distribution, but the inherent caching feature of the DNS protocol might make that an un…

I thought that even if you self host - isn't it your registrar that points the dns records to your dns servers? Would someone with self-hosted DNS still be working in this situation? (doesn't the DNS query first go to network solutions, who refers it to your name servers?). I'm not trying to argue, I genuinely need to know the answer as I'll have to explain it to many other people, later today...

I self-host for most things. I live on the edge and don't have backup DNS. For most situations, you'd want backup DNS as well.

ns1.kimsal.com ns2.kimsal.com nsA.offsite1.net nsB.offsite1.net

etc. the kimsal ones are my primary/secondary, but having the others offsite, slaving from the primary, would mean that even if my primaries went down, the info would be at the 'offsite' ones. Those 'offsite' DNS servers would need to be registered with the registrar as well, and become part of your record (you can check that with a whois).

Re: Network Solutions' DNS was down

#23

Post by mgkimsal » Wed, Jul 17, 2013, 2:58 PM UTC

simonsarris wrote: post #20

Honest question from a networking beginner: So suppose right now I've got two name servers configured, NS93.worldnic.com and NS94.worldnic.com. These are down as they're the part of the Network Solution's name servers that are having issues. If I had added more, for instance if I used Amazon's Route53 and added two name servers of theirs in addition to the *.worldnic.com ones, would my site be reachable right now?

yes

Re: Network Solutions' DNS was down

#24

Post by area51org » Wed, Jul 17, 2013, 2:58 PM UTC

simonsarris wrote: post #20

Honest question from a networking beginner: So suppose right now I've got two name servers configured, NS93.worldnic.com and NS94.worldnic.com. These are down as they're the part of the Network Solution's name servers that are having issues. If I had added more, for instance if I used Amazon's Route53 and added two name servers of theirs in addition to the *.worldnic.com ones, would my site be reachable right now?

Yes, but there may be delay, because the nameservers are tried in random order, and so each server that is down will have to time out before users move on to the next.

Re: Network Solutions' DNS was down

#25

Post by jbert » Wed, Jul 17, 2013, 2:59 PM UTC

dholowiski wrote: post #19

pilif wrote: post #16

This is one of the reasons why I self-host DNS. Even with tons of users, the resources it takes to serve DNS requests pale compared to what you have to put behind your application servers. Of course if you are using a CDN to provide your users with better locality, you might want to look into a service that provides localized DNS distribution, but the inherent caching feature of the DNS protocol might make that an un…

I thought that even if you self host - isn't it your registrar that points the dns records to your dns servers? Would someone with self-hosted DNS still be working in this situation? (doesn't the DNS query first go to network solutions, who refers it to your name servers?). I'm not trying to argue, I genuinely need to know the answer as I'll have to explain it to many other people, later today...

No, they just go into the zone.

You run a server for example.net. Your server will respond to any requests sent to it for records in that zone.

Someone attempting to reach your site will query the parent zone (.com) for NS records for your zone. So they will query for NS records for example.com against a server which is authoratitive for .com.

(How do they find .com server? They ask the root servers. How do they find the root servers? That's the bootstrap info.)

Re: Network Solutions' DNS was down

#26

Post by TranceMan » Wed, Jul 17, 2013, 2:59 PM UTC

theg2 wrote: post #13

We're slowly coming back online, there are reports of a (D)DOS attack against them but I can't find a source.

Some talk here [1] of a recorded message from their support number that they are currently experiencing a DOS attack.

1. http://www.webhostingtalk.com/showthread.php?t=1285835

Re: Network Solutions' DNS was down

#27

Post by [deleted] » Wed, Jul 17, 2013, 2:59 PM UTC

dholowiski wrote: post #19

pilif wrote: post #16

This is one of the reasons why I self-host DNS. Even with tons of users, the resources it takes to serve DNS requests pale compared to what you have to put behind your application servers. Of course if you are using a CDN to provide your users with better locality, you might want to look into a service that provides localized DNS distribution, but the inherent caching feature of the DNS protocol might make that an un…

I thought that even if you self host - isn't it your registrar that points the dns records to your dns servers? Would someone with self-hosted DNS still be working in this situation? (doesn't the DNS query first go to network solutions, who refers it to your name servers?). I'm not trying to argue, I genuinely need to know the answer as I'll have to explain it to many other people, later today...

[deleted]

Re: Network Solutions' DNS was down

#28

Post by supine » Wed, Jul 17, 2013, 3:00 PM UTC

dholowiski wrote: post #19

pilif wrote: post #16

This is one of the reasons why I self-host DNS. Even with tons of users, the resources it takes to serve DNS requests pale compared to what you have to put behind your application servers. Of course if you are using a CDN to provide your users with better locality, you might want to look into a service that provides localized DNS distribution, but the inherent caching feature of the DNS protocol might make that an un…

I thought that even if you self host - isn't it your registrar that points the dns records to your dns servers? Would someone with self-hosted DNS still be working in this situation? (doesn't the DNS query first go to network solutions, who refers it to your name servers?). I'm not trying to argue, I genuinely need to know the answer as I'll have to explain it to many other people, later today...

No, this is for domains where .worldnic.com is the authorative server. If you registered your name through NetSol but hosted the DNS servers elsewhere then you would just be relying on the respective TLD servers (e.g. .gtld-servers.net for .com domains) to refer resolvers to the correct authorative servers.

Re: Network Solutions' DNS was down

#29

Post by [deleted] » Wed, Jul 17, 2013, 3:02 PM UTC

simonsarris wrote: post #20

Honest question from a networking beginner: So suppose right now I've got two name servers configured, NS93.worldnic.com and NS94.worldnic.com. These are down as they're the part of the Network Solution's name servers that are having issues. If I had added more, for instance if I used Amazon's Route53 and added two name servers of theirs in addition to the *.worldnic.com ones, would my site be reachable right now?

[deleted]

Re: Network Solutions' DNS was down

#30

Post by TranceMan » Wed, Jul 17, 2013, 3:03 PM UTC

Their facebook page has been updated:

Network Solutions is experiencing a Distributed Denial of Service (DDOS) attack that is impacting our customers as well as the Network Solutions site. Our technology team is working to mitigate the situation. Please check back for updates.

https://www.facebook.com/networksolutions/posts/101514681058...