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→Network Address Translation (NAT)
=== Network Address Translation (NAT) ===
[[Wikipedia:Network address translation|Network Address Translation]] is a tecnique used in IP networking that modify IP packet header, by changing IP address, while the routering routing device process processes the packet.
Only the IP address of the routing device (in case of a Virtual Machine, the host ack at router for the guest) is seen from outside. Usually the routed device (in our case, the guest machine) has an IP address that belongs to a completely different IP subnet.
