Azure Private DNS resolution

Question

Azure Private DNS resolution

Mohammad Thaher 1

Hi All ,

I am unable to resolve google or any SQL database with a private endpoint after deploying the Azure Private DNS Resolver while using the corporate vpn .

my current setup :

I have a Microsoft DNS azure VM that i need to replace with Azure private DNS resolver .

1- SLQ server with private endpoint enabled and public access is disabled

2- Azure DNS resolved is deployed on the hub virtual network

3 - Private DNS zones are correct and virtual links connected to both the hub and spoke vent

the issue i am facing now is after connecting the corporate VPN , i cannot resolve anything

Example :

C:\Windows\system32>nslookup www.google.com
DNS request timed out.
    timeout was 2 seconds.
Server:  UnKnown
Address:  10.10.190.14 ---> 

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

ChaitanyaNaykodi-MSFT 27,476 Reputation points Microsoft Employee Moderator

2023-02-14T19:23:57.6266667+00:00
@Anonymous ,

Thank you for reaching out on Microsoft Q&A forum.

I understand you are trying to replace a Microsoft DNS azure VM with Azure private DNS resolver and are unable to resolve any domain names.

Can you please let us know if you are facing this issue after setting up the private DNS resolver? and were you able to resolve the domains using the Microsoft DNS forwarder azure VM deployed before.

You mentioned in the comment below that you are using Cisco VPN can you please elaborate more on the set-up you have and from where you are trying to resolve the domain names?

It will be helpful if you can provide the information above as it will help us better troubleshoot this issue. Thank you!
ChaitanyaNaykodi-MSFT 27,476 Reputation points Microsoft Employee Moderator

2023-02-15T23:16:10.0533333+00:00

@Anonymous ,

Just following up here to check if you were able to take a look at my comment above. It will be helpful if you can provide the information requested as it will help us better troubleshoot this issue.
ChaitanyaNaykodi-MSFT 27,476 Reputation points Microsoft Employee Moderator

2023-02-17T02:23:59.77+00:00

@Moe Dahr ,

Just following up here to check if you were able to take a look at my comment above. It will be helpful if you can provide the information requested as it will help us better troubleshoot this issue.

1 answer

Your answer

ChaitanyaNaykodi-MSFT 27,476 Reputation points Microsoft Employee Moderator

2023-02-14T19:23:57.6266667+00:00

@Anonymous ,

Thank you for reaching out on Microsoft Q&A forum.

I understand you are trying to replace a Microsoft DNS azure VM with Azure private DNS resolver and are unable to resolve any domain names.

Can you please let us know if you are facing this issue after setting up the private DNS resolver? and were you able to resolve the domains using the Microsoft DNS forwarder azure VM deployed before.

You mentioned in the comment below that you are using Cisco VPN can you please elaborate more on the set-up you have and from where you are trying to resolve the domain names?

It will be helpful if you can provide the information above as it will help us better troubleshoot this issue. Thank you!
ChaitanyaNaykodi-MSFT 27,476 Reputation points Microsoft Employee Moderator

2023-02-15T23:16:10.0533333+00:00

@Anonymous ,

Just following up here to check if you were able to take a look at my comment above. It will be helpful if you can provide the information requested as it will help us better troubleshoot this issue.
ChaitanyaNaykodi-MSFT 27,476 Reputation points Microsoft Employee Moderator

2023-02-17T02:23:59.77+00:00

@Moe Dahr ,

Just following up here to check if you were able to take a look at my comment above. It will be helpful if you can provide the information requested as it will help us better troubleshoot this issue.

Answer 1

JimmySalian-2011 42,491

Did you configured the DNS ruleset links? Please check this page with similar setup https://learn.microsoft.com/en-us/azure/dns/private-resolver-endpoints-rulesets

https://learn.microsoft.com/en-us/azure/dns/private-resolver-hybrid-dns

Hope this helps.

JS

==

Please accept as answer and do a Thumbs-up to upvote this response if you are satisfied with the community help. Your upvote will be beneficial for the community users facing similar issues.

Mohammad Thaher 1 Reputation point

2023-02-14T16:15:36.8733333+00:00

I did follow the above documentation but still didn't work. all the documentation around s2s and express route by my case is using Cisco VPN without having on-prem environment.

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Azure Private DNS resolution

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