The diagram below shows a packet traveling through a NAT rou

The diagram below shows a packet traveling through a NAT router. Packet 1 is sent from the internal host (S) to the NAT router, packet 2 is sent from the NAT router to the external web server (D), packet 3 is received from the web server by the NAT router, and packet 4 is sent by the NAT router to the original host. Fill in the missing source and destination IP addresses and port numbers in packets 2-4

Solution

Packet 2 : S : 140.75.10.100 ,2015

                  D : 128.90.2.120 ,5000

Packet 3 : S : 128.90.2.120, 5000

                  D : 140.75.10.100, 2015

Packet 4 : S : 128.90.2.120 , 5000

                   D: 10.0.0.1 , 80