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Network Address Translation (NAT) Implementation Methods

Not so long ago, the Internet had a problem. There was a high demand for Internet access, but only a limited number of available Internet (IP) addresses. One solution to this problem was the creation and wide deployment of Network Address Translation (NAT), which essentially resolves multiple IP addresses into one address. This simple idea greatly extended the use of IP version 4 addresses, providing the time needed to design and implement a worthy successor—IP version 6. This article discusses the basics of NAT operation and the common NAT modes deployed in modern networks

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