Contributed by Jose Chaverra Say

The Internet Protocol (IP) is the most widely used network protocol. IPv4 is a well-established protocol and, since its publication in 1981, only a few changes have been made to it. For many years it proved to be an efficient way to interchange data over a computer network. Ironically, IPv4’s success is at the same time its own executioner. The expansion of the Internet around the world and the consequent hunger for internet presence will exhaust any world-wide availability of IPv4 addresses by July 2014. The Network Address Translator (NAT) is an educated way to incorporate more devices to the global network that the nominal capacity.

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