Question: What is NAT (Network Address Translation)?

NAT (Network Address Translation) means the process to change the source and/or destination IP address of network IP packets when they pass through a router as according to network address translation configuration.

For typical home network setup, all home network’s source IP addresses (private IP addresses) will be translated to broadband WAN IP when accessing to Internet, and also the source port of IP packet will be translated too, so that several computers can access to Internet with one Internet connection one WAN IP address by using router that performs NAT. Thy type of NAT is also called PAT (Port Address Translation).

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