What is the purpose of a Private DNS server?

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Purpose of Private DNS server

As the name suggests, a Private DNS server appears to be something personalized. It links your network and the Domain Name System server, protecting data from being intercepted by third parties. They are DNS networks that are not linked to the Public DNS. Consider it a Private library with a small collection of books. This has both advantages and disadvantages. Yes, you will be unable to read certain types of books. Nevertheless, there is one advantage: no one will know what you are reading because your library is secret.

Furthermore, we refer to Private as DNS over TLS (Transport Layer Security) or DNS over HTTPS (Hypertext Transfer Protocol Secure). This is because when you use DoT (DNS over TLS) or DoH (DNS over HTTPS), all DNS queries are encrypted. This makes it far more difficult for malicious third parties to monitor your online activity.


The followings are the components of the Private DNS server:

  • TLS stands for Transport Layer Security and is used to secure two-way communication between a client and a server on one side and a server on the other. Furthermore, SSL (Security Socket Layer) has been totally replaced with Transport Layer Security (TLS).
  • HTTPS (Hypertext Transfer Protocol Secure) – It generates encryption codes or session keys that must be validated by a third party. Users without authorization will not be able to access the information of others due to the system’s security.

Private DNS server vs. Public DNS server – Differences

  • Companies are in charge of their own Public DNS servers. For example, pages linked to the company’s public website would get components for a website from this Public DNS server.

A Private DNS server, on the other hand, may be only responsible for addressing queries related to the company’s internal assets. System administrators can optimize the performance of each program by configuring the servers and networks.

  • The most important advantage of adopting Private DNS is security. The usage of DNS for public and private purposes is kept separate to avoid confusion. The Public DNS server only provides IP addresses for web servers and other publicly accessible assets. Only a Private DNS protected within the internal network’s perimeter can be used to obtain IP addresses for internal support.

An additional motive for businesses using Private DNS is to protect their employees’ online usage. Public DNS providers gain a comprehensive image of their consumers’ online activities, which they can exploit to create resale profiles. The traffic patterns are disguised via a Private DNS.


Let’s review. Public DNS is one of the most critical security concerns on the Internet. The Private DNS server, on the other hand, is an excellent defense against this. It can be configured to protect you and your devices from malicious Internet actors. So don’t be hesitant to take advantage of this opportunity.

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