Hour 18 Running Your Own Name Server
A common task among Unix system administrators is setting up and running a domain name system (DNS) server. Though we’re used to thinking of Web sites, e-mail recipient systems, and other network information as specific names, the Internet actually uses unique numbers. The DNS server system maps names to numbers.
When you type a URL into your Web browser, for example, it first contacts your local DNS server asking for the IP address of the Web host you are requesting. If your local DNS server does not know the IP address, it will then forward the request to another DNS server, often one of the root DNS servers ...
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