Domain Name System (DNS) allows a DNS namespace to be divided up into zones, which store name information about one or more DNS domains. For each DNS domain name included in a zone, the zone becomes the authoritative source for information about that domain.
The SOA resource record contains the following information:
Source host – The host where the file was created.
Domain Name System (DNS) converts the name of a Web site (www.linuxhomenetworking.com) to an IP address (184.108.40.206). This step is important, because the IP address of a Web site’s server, not the Web site’s name, is used in routing traffic over the Internet. This chapter will explain how to configure your own DNS server to help guide Web surfers to your site.
Before you dig too deep in DNS, you need to understand a few foundation concepts on which the rest of the chapter will be built.