NAT Terminology

To clarify this discussion and to fully prepare for the exam, you should review some of the terminology used in a NAT environment. You need to understand a number of terms when using NAT, most notably:

► Inside Local Address—An IP address assigned to a host on the internal network and is not being advertised to the Internet. This address is generally assigned by a local administrator. This address is not a legitimate Internet address.

► Inside Global Address—A registered IP address as assigned by InterNIC.

► Outside Local Address—The IP address of an outside host of the network that is being translated.

► Outside Global Address—The IP address assigned to a host on the outside of the network that is being translated.

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