DNS, or Domain Name System, is a hierarchical and decentralized naming system for computers, services, or other resources connected to the internet or a private network. It associates various information with domain names assigned to each of the connected devices using a distributed database system. Thus, the resolution of domain names to IP addresses is facilitated, making it convenient for users to access websites, send emails, and connect to online services using easy-to-remember domain names instead of complex numerical IP addresses.
To ensure the smooth functioning of the internet and other interconnected networks, it is essential to have a properly configured DNS system. DNS misconfigurations can lead to a variety of problems, including: