NAT functions

• Translate inside source addresses

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i= .".rJr.msF, • Overload inside global addresses

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NAT can be used to perform these functions to support a broadband subscriber:

■ Translating inside source addresses: Establishes a mapping between inside local and inside global addresses.

■ Overloading inside global addresses: You can conserve addresses in the inside global address pool by allowing source ports in TCP connections or UDP conversations to be translated. When different inside local addresses map to the same inside global address, the TCP or UDP port numbers of each inside host are used to distinguish between the hosts.

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