Freescale Semiconductor TWR-MCF52259-Ethenet - Manual (Page 28)

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NAT
Network Address Translation ( NAT , also known as network masquerading or I P-masquerading )
involves re-writing the source and/or destination addresses of IP packets as they pass through a
router or firewall.
Most systems using NAT do so in order to enable multiple hosts on a private network to access the
Internet using a single public IP address.
NAT is a non-standard protocol
192.168.1.1
192.168.1.2
192.168.1.3
192.168.1.4
192.168.1.5
Router/Gateway
running NAT
IP=10.1.2.3
internet
10.1.2.3 192.168.1.0
Default Gateway is where packets
addressed outside the subnet are
sent to.
Local Global