Consider a NATed network scenario below in Figure 5 in which three hosts, with private IP addresses 10.0.1.1, 10.0.1.17, 10.0.1.20 are in a local network behind a NAT'd router that sits between these three hosts and the larger Internet. IP datagrams being sent from, or destined to; these three hosts must pass through this NAT router. The router's interface on the LAN side has IP address 10.0.1.25, while the router's address on the Internet side has IP address 135.122.205.206. Suppose that the Host with IP address 10.0.1.11 sends an IP datagram destined to host 128.119.169.186. The source port is 3357, and the destination port is 80, fill the source (S) and destination (D) addresses in Figure 5.

NAT translation table WAN side addr LAN side addr 135.122.205.200 10.0.1.11 10.0.1.11 10.0.1.25 2 S: D: 1 S: D: S: D: 3 S: D: 10.0.1.17 135, 122,205,206 10.0.1.20 Figure 6. NAT application