How Do I Make My DNS Server Available?


Heather Bennett

How Do I Make My DNS Server Available?

Setting up a DNS (Domain Name System) server is essential for managing domain names and translating them into IP addresses. Making your DNS server available ensures that it can respond to requests from clients and provide accurate information. In this tutorial, we will explore the steps to make your DNS server available.

Step 1: Configuring Your DNS Server

Before making your DNS server available, you need to configure it properly. This involves setting up the necessary records and configuring the server software.

Create Necessary Records

In order for your DNS server to function correctly, you need to create certain records:

  • A (Address) Record: This record maps a domain name to an IP address. It is used for resolving hostnames.
  • CNAME (Canonical Name) Record: This record creates an alias for a domain name. It is used when you want one domain name to point to another domain name.
  • MX (Mail Exchanger) Record: This record specifies the mail servers responsible for accepting incoming emails for a domain.

Configure Server Software

You also need to configure your DNS server software with the appropriate settings. Each software may have different configuration steps, so make sure you refer to its documentation for detailed instructions.

Step 2: Opening Firewall Ports

In order for clients to access your DNS server, you need to open the necessary ports in your firewall:

  • TCP Port 53: This port is used for zone transfers between primary and secondary servers as well as for DNS queries.
  • UDP Port 53: This port is used for DNS queries.

Make sure you configure your firewall to allow incoming and outgoing traffic on these ports. This will ensure that your DNS server can communicate with clients and other DNS servers effectively.

Step 3: Registering Your DNS Server

To make your DNS server available to the wider internet, you need to register it with a domain registrar. This involves updating the nameservers for your domain to point to your DNS server’s IP address.

Contact your domain registrar for instructions on how to update the nameservers. Once updated, it may take some time for the changes to propagate across the internet. During this time, your DNS server will gradually become available to clients querying for your domain.

Step 4: Testing Your DNS Server

After completing the above steps, it’s crucial to test whether your DNS server is functioning correctly and providing accurate responses. You can use tools like nslookup, dig, or online DNS lookup tools to perform tests and verify the results.

If any issues arise during testing, double-check your configuration settings and consult relevant documentation or online resources for troubleshooting tips.


Making your DNS server available requires proper configuration, opening firewall ports, registering with a domain registrar, and thorough testing. By following these steps, you can ensure that your DNS server is ready to handle requests from clients and provide reliable domain name resolution.

Remember that maintaining a secure and reliable DNS infrastructure is crucial for the functioning of websites and other network services. Regular updates, monitoring, and security measures should be implemented to ensure optimal performance of your DNS server.

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