The DNS Security Extensions are task force standards for protecting certain types of data provided by the DNS domain name system (DNS) used in Internet Protocol networks. Domain name servers are software programs that maintain the authoritative database for DNS. An authoritative server is a part of the DNS. It is responsible for maintaining the DNS server database, which contains records of registered domains, resolved names and IP addresses of servers and other computers, and providing authoritative information to all of the DNS client applications such as browsers e-mail services. Some examples of DNS servers are located in big organizations or at the servers of public sector websites such as universities and other educational establishments. A domain name server is usually set up with a dedicated or shared physical machine, while some use multiple machines for multiple purposes.
DNS is an important part of network operations for several reasons. Domain name system allows users to communicate with each other through domain names, and it also helps people identify themselves. While the domain name system allows for easy identification and communication with users, it also allows them to be easily spoofed and misused. For this reason, the domain name system security extensions, or DNAME, have been created.
DNAME, also known as DNS Security, attempts to restrict the use of Domain Names by allowing the DNS server administrator to block or limit the DNS server records that can be returned. This type of security feature was created to help the Internet community better understand the potential for misuse of the DNS.