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Site DNS Problems

atom0s

By atom0s
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atom0s

atom0s

Posted
Posted

Seems the sites DNS is not properly propagating currently and is being marked as dead across the world in some locations. Tested on several machines I have access to in different parts of the USA and all of them fail to resolve the site properly. (West and East cost USA.)

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kao

kao

Posted
Posted

Same here. Non-working from one device, working just fine on other device (connected via different ISPs/DNS servers).

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Teddy Rogers

Teddy Rogers

Posted
Posted

I noticed a few days ago there seemed to be an issue with Quad9 and Cloudflare. Thought this was all good now. My local DNS servers and OpenDNS seem to be working fine from here.

Can you let me know what DNS servers you are having difficulty resolving tuts4you.com. You might need to let me know your location/region as the lookup may use a regional server...

Ted.

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kao

kao

Posted
Posted

Google DNS (8.8.8.8) fails, Cloudflare (1.1.1.1) fails, OpenDNS works. 

C:\>nslookup forum.tuts4you.com 8.8.8.8
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

*** google-public-dns-a.google.com can't find forum.tuts4you.com: Server failed

C:\>nslookup forum.tuts4you.com 1.1.1.1
Server:  1dot1dot1dot1.cloudflare-dns.com
Address:  1.1.1.1

*** 1dot1dot1dot1.cloudflare-dns.com can't find forum.tuts4you.com: Server failed

C:\>nslookup forum.tuts4you.com  208.67.222.222
Server:  resolver1.opendns.com
Address:  208.67.222.222

Non-authoritative answer:
Name:    forum.tuts4you.com
Address:  198.57.187.53

 

As an admin you can see my location but I prefer not to post it publicly.

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LCF-AT

LCF-AT

Posted
Posted

Hi guys,

I also have same bad trouble since 3 days now and cant access T4Y anymore. :( First I thought the problem is my router / PC etc because a ping to T4Y / tracert does also fail. 

C:\Windows\system32>ping tuts4you.com
Ping-Anforderung konnte Host "tuts4you.com" nicht finden. Überprüfen Sie den Namen, und versuchen Sie es erneut.

C:\Windows\system32>ping tuts4you.com 8.8.8.8
Ping-Anforderung konnte Host "tuts4you.com" nicht finden. Überprüfen Sie den Namen, und versuchen Sie es erneut.

C:\Windows\system32>ping tuts4you.com 1.1.1.1
Ping-Anforderung konnte Host "tuts4you.com" nicht finden. Überprüfen Sie den Namen, und versuchen Sie es erneut.

C:\Windows\system32>nslookup tuts4you.com
Server:  UnKnown
Address:  2a02:908:2:a::1

*** tuts4you.com wurde von UnKnown nicht gefunden: Server failed.

C:\Windows\system32>nslookup tuts4you.com 8.8.8.8
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

*** tuts4you.com wurde von google-public-dns-a.google.com nicht gefunden: Server failed.

C:\Windows\system32>nslookup tuts4you.com 1.1.1.1
Server:  1dot1dot1dot1.cloudflare-dns.com
Address:  1.1.1.1

*** tuts4you.com wurde von 1dot1dot1dot1.cloudflare-dns.com nicht gefunden: Server failed.

Also if I try to set DNS for IP4 for google (8.8.8.8) it dosent work to get access on T4Y with any browser or CMD commands etc.On internet sites where I can let check sites I get also DNS Lookup errors....

DNS.png.60fbacfc58482bdb946c2a2a6b55238e.png

...also my Windows Network check does show me error like this...

DNSmy.png.7054d2d227ecd43977ee39d3be474b70.png

....seems that I cant fix this problem on my side.I did already reset the router etc without any change.So whats the problem now?My ISP maybe too?Why only just for T4Y?Strange.Maybe you can do something about that problems Teddy or so.

PS: At the moment I use Opera browser with enabled VPN to get access on T4Y to write this reply.Only way to get access now here.

greetz

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Teddy Rogers

Teddy Rogers

Posted
Posted

Can you try accessing the site now as you normally would and let me know if you are still having issues please? Thank you.

Ted.

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LCF-AT

LCF-AT

Posted
Posted

Hi,

still not working for me also not with my local ISP DNS.Now I also need to use OpenDNS too to visit T4Y.Has anyone a idea what the problem could be that the others do fail?Is it it config error by Teddy (no idea of course) or anything else?

greetz

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Extreme Coders

Extreme Coders

Posted
Posted (edited)

I think the issue is due to failed DNSSEC validation. 
https://dnssec-analyzer.verisignlabs.com/forum.tuts4you.com

Spoiler

image.png.06071f970291d11403b44d39d01c4b01.png

Google DNS (8.8.8.8), Cloudflare (1.1.1.1) & Quad9 (9.9.9.9), all perform DNSSEC validation and wont return a response if validation fails.
 

Spoiler

https://developers.google.com/speed/public-dns/faq#gdns_validation_failure

image.png.f0ce1728d7eb2e69289bd25754522aa1.png

 

Spoiler

https://developers.cloudflare.com/1.1.1.1/nitty-gritty-details/

image.png.11cbd2ba6196649ed65f98c8f9d94a80.png

 

Spoiler

https://www.quad9.net/faq/#Does_Quad9_implement_DNSSEC

image.png.6d57e067bf9880a0e5074c74d36df4c1.png

However OpenDNS is forgiving and doesn't seem to support DNSSEC as evident here: 
https://support.opendns.com/hc/en-us/community/posts/220028387-OpenDNS-and-DNSSEC

Spoiler

image.png.255a403c5c346fb8e3eec90191fbeaff.png

 

Edited by Extreme Coders
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atom0s

atom0s

Posted
  • Author
Posted (edited)

Based on whois info on the tuts4you domain:

https://help.enom.com/hc/en-us/articles/115001028212-Adding-a-DNSSEC-to-a-Domain-Name

Quote

DNSSEC support must be enabled with your current DNS provider. At this time, Our default name servers do not support the creation of the appropriate resource records to create a proper DNSSEC chain.  This means that the DS key will need to be generated separately so it can be applied to those domains using Enom's Nameservers.

 

Edited by atom0s
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LCF-AT

LCF-AT

Posted
Posted

Hi again,

still not working today.

Now I have a small question about how to change the DNS via command / batch to prevent the manually entering if I need it.On internet I found almost same infos how to do it and I tried the commands but it seems that it dosent work on my Win7 OS.I tried the commands directly in CMD window and also via batch file but if I check after the network settings manually then there has nothing changed and all is still set as before too.Why?Just can only change it manually.Has anyone same trouble?How to do it right?

greetz

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evlncrn8

evlncrn8

Posted
Posted

working for me now, though i changed my dns on my router from 1.1.1.1 / 1.0.0.1 (cloudflare i think) to the google one 8.8.8.8 / 8.8.4.4 and it now works... 

dont forget the good old

ipconfig /flushdns

 

as well

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kao

kao

Posted
Posted

@LCF-AT: To set one DNS server: 

netsh interface ipv4 set dns "Local Area Connection" static 208.67.222.222

To add another DNS server: 

netsh interface ipv4 add dns "Local Area Connection" 208.67.222.220 2

To see the results: 

netsh interface ipv4 show dnsservers

 

Notes:

1) All commands must be run from elevated command prompt!

2) You might have different name for the connection, not "Local Area Connection". For example, "Ethernet" or something. You can use "netsh interface ip show config" to show you connection names+config.

3) Google for more information on parameter values.

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LCF-AT

LCF-AT

Posted
Posted

Hi kao and thanks for your answer,

still dosent work for me.I get no error or anything but nothing has changed thats the problem.I also found a video I tried too....

https://www.youtube.com/watch?v=S1jq-uwWRIU

...but also dont work for me. 

netsh interface ipv4 set address name="LAN-Verbindung" static 192.168.0.11 255.255.255.0 192.168.0.1

netsh interface ipv4 set dns name="LAN-Verbindung" static 8.8.8.8

Above I have test to set a static IP / sub / gatewy (my).LAN-Verbindung is the name I have.If I enter that command then I get a error called element not found!=?If I enter the second command to change DNS then I get no error or anything but if I check my NC status then I see the DNS has not changed.Thats the problem.I only can change it manually so far. :( Do you have any clue why I have that issues?

greetz

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LCF-AT

LCF-AT

Posted
Posted

Hi again,

ok it seems to be a name issue of "LAN-Verbindung" that it dosent work and I get element not found.Now I did rename it and now its working. :) Now I created 2 simple batch files for default source=dhcp and one for OpenDNS.So the funny thing is that I dont need it anymore so my local DNS does also work now again!?Google works also now and all other too!?Was it just a random that they work now again or does it work because I changed my NC name?Hmm...whatever so now its working.

greetz

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Teddy Rogers

Teddy Rogers

Posted
Posted

The server should be working fine now and you should all be able to use your normal DNS servers. There was a network card problem after a server update and yes, there was the problem with DNSSEC. If after flushing DNS you are still having problems please let me know which DNS server.

Good to see that DNSSEC has worked as designed, across multiple DNS servers. Annoying as it is when there is a problem.

If you want to change your DNS server I recommend doing it at router level and not in the OS...

Ted.

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