A name server is a computer Hardware or software server that implements a network service for providing responses to queries against a directory service. It translates an often humanly-meaningful, text-based identifier to a system-internal, often numeric identification or addressing component. This service is performed by the server in response to a service protocol request.
An example of a name server is the server component of the Domain Name System (DNS), one of the two principal namespaces of the Internet. The most important function of DNS servers is the translation (resolution) of human-memorable domain names and hostnames into the corresponding numeric Internet Protocol (IP) addresses, the second principal name space of the Internet which is used to identify and locate computer systems and resources on the Internet.
1- Distributed Reflection DoS attack 2- Cache poisoning 3- TCP SYN floods 4- DNS tunneling 5- DNS hijacking 6- Random subdomain attack 7- Phantom Domain attack 8- Basic NXDOMAIN attack 9- Domain lock-up attack 10- Botnet-based attacks from CPE devices
DNS Security Tips
1- dns amplification 2- dns appliance 3- dns monitoring