Respuesta :
For the purpose of sharing public addresses among numerous private hosts, use Dynamic Network Address Translation (NAT).
Dynamic NAT permits private hosts to connect to the internet but forbids public hosts from initiating connections with private hosts.
A large number of hosts with private IP addresses can share an equal or smaller number of public IP addresses in a dynamic NAT.To link a port number to a request from a private host, the NAT router employs Port Address Translation (PAT).
Although it may appear to be very similar to a Dynamic PAT, the main distinction is that this is a NAT—only the IP address is changing. This means that a single public IP address cannot be used simultaneously by several internal Hosts.
It should be noted that individuals frequently use the phrase "dynamic NAT" when talking about address translation when they really mean "dynamic PAT." Dynamic NAT is rarely utilised in production for the reasons stated above. It is a dynamic PAT if a single IP address is used by numerous internal users and if the port number changes.
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