The scheme above roughly describes how devices with private IP addresses communicate with a remote host on the Internet (and ''vice versa'') with the help of NAT. Bellow the scheme is a depiction of a NAT mapping table. It illustrates how the router differentiates to which device in the local network to redirect incoming data packets. | The scheme above roughly describes how devices with private IP addresses communicate with a remote host on the Internet (and ''vice versa'') with the help of NAT. Bellow the scheme is a depiction of a NAT mapping table. It illustrates how the router differentiates to which device in the local network to redirect incoming data packets. |