Planning DNS Implementations

Planning a new DNS implementation or revamping your existing DNS implementation requires good planning. You need a solid understanding of how DNS works, and the areas you should know about include the following:

  • How DNS namespaces are assigned and used

  • How DNS name resolution works and can be modified

  • What resource records are available and how are they used

  • How DNS zones and zone transfers can be used

  • How internal and external servers can be used

Public and Private Namespaces

The DNS domain namespace is a hierarchical tree in which each node and leaf in the tree represents a named domain. Each level of the domain namespace tree is separated by a period (called a "dot"). As discussed in the section entitled "Understanding ...

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