Share via

DNS forwarder

Shahir Thottathil 1 Reputation point
2021-08-15T16:00:33.527+00:00

Dear Team,

I have one question about the DNS forwarder port. In my situation, all port from my DNS server is blocked and client not able to communicate with the internet.
After my troubleshoot, I found DNS forwarder is configured and can't resolve the public DNS server. Then I checked with the security team and confirmed they blocked all the ports.
Now the question is which PORT should I open to the internet from my DNS server to communicate with the PUBLIC DNS Server.

I know 53 is DNS port used to communicate, but i just need to confirm with the expert whether i require to open any other ports.

Thanks and Regards,
Sha

Windows for business | Windows Client for IT Pros | Networking | Network connectivity and file sharing
0 comments

1 answer

Sort by: Most helpful
Most helpful Newest Oldest
  1. Anonymous
    2021-08-15T19:38:45.77+00:00

    You'll find port requirements listed here.
    https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/config-firewall-for-ad-domains-and-trusts

    --please don't forget to upvote and Accept as answer if the reply is helpful--

    0 comments

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.