The Domain Name System (DNS) is the software that is responsible for converting hostnames into numbers that computers can understand. For example, the name www.guardiandigital.com corresponds to the host IP address 63.87.101.80 and vice versa. The DNS server, sometimes called a name server, is the process that runs on EnGarde awaiting incoming name service requests.
The name server section allows you to specify the name server that will be hosted here. A name server is required for the domain to function properly.
To add the name server simply type it into the Name Server field and click on the Create button to submit the changes.