Chapter 25. DNS/BIND: Tracking Domain Names and Addresses




DNS (Domain Name System) maps domain names to IP addresses, and vice versa. It reduces the need for humans to work with IP addresses, which, with the introduction of IPv6, are complex. The DNS specification defines a secure, general-purpose database that holds Internet host information. It also specifies a protocol that is used to exchange this information. Further, DNS defines library routines that implement the protocol. Finally, DNS provides a means for routing email. ...

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