Title: Traditional IP Network Address Translator (Traditional NAT)
Author(s): P. Srisuresh, K. Egevang.
Status: INFORMATIONAL
Date: Jan 2001
Length: 37675
Obsoletes: RFC1631
Basic Network Address Translation or Basic NAT is a method by which IP addresses are mapped from one group to another, transparent to end users. Network Address Port Translation, or NAPT is a method by which many network addresses and their TCP/UDP (Transmission Control Protocol/User Datagram Protocol) ports are translated into a single network address and its TCP/UDP ports. Together, these two operations, referred to as traditional NAT, provide a mechanism to connect a realm with private addresses to an external realm with globally unique registered addresses.
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