Protecting DNS Services with BIND
This chapter does not address the detailed configuration of a DNS server. However, it does address security issues related to such configuration. The focus of this section is the BIND software. With that in mind, you should be aware of the four different types of DNS servers available:
Master—A master DNS server is the authoritative server for a domain.
Slave—A slave DNS server relies on a master DNS server for data.
Caching-only—A caching-only DNS server refers requests to other DNS servers. It also stores recent requests in a local cache.
Forwarding-only—A forwarding-only DNS server refers all requests to other DNS servers.
The Basics of DNS on the Internet
DNS is a distributed database of domain names ...
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