![]() The purpose of this NAT device is to translate the source IP addresses of the internal network hosts into public routable IP addresses in order to communicate with the Internet. ![]() ![]() Network Address Translation (NAT) therefore was introduced to overcome these addressing problems that occurred with the rapid expansion of the Internet.Įven if NAT was suggested as a temporary solution, it has been adopted by all network hardware manufacturers, and it is considered a very useful technology, not only for IP address conservation, but also for many other purposes including security.īasically NAT allows a single network device (e.g a router, firewall etc) to act as an agent between a private local area network and a public network such as the Internet. The depletion of the public IPv4 address space has forced the internet community to think about alternative ways of addressing networked hosts.
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