A private network uses a NAPT device at public IP address 143.231.15.10 The computers in the network use addresses of the form 192.168.1.x/24. Suppose that computer inside the NATed network sends a request with
Source address: 192.168.1.6
Source port: 433
Destination address: 111.33.45.50
Destination port: 21
The next available port number on the NAPT device is 13450
PART 1:
What source and destination information do the request packet headers contain when the request is sent out by the sending host?
Source address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Source port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
PART 2:
What source and destination information do the request packet headers contain when the request is sent out by the NAT box?
Source address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Source port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
PART 3:
What source and destination information do the response packet headers contain when the response is received by the NAT box?
Source address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Source port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
PART 4:
What source and destination information do the response packet headers contain when the response is received by the original sending host?
Source address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Source port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination address: [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"]
Destination port : [ Select ] ["111.33.45.50", "143.231.15.10", "192.168.1.6", "21", "433", "13450"
