At step $1,$ after it has been sent by the host but before it has reached the

NATted router. What are the source and destination IP addresses for this

datagram?

$($ii$)$ At step $2,$ what are the source and destination IP addresses for this datagram?

Also what are the source and destination port numbers for the TCP segment in

this IP datagram? Identify the differences in datagram's IP addresses and port

numbers between step $1$ and step $2.$ Specify the entry that has been made in

the router's NAT table

$($iii$)$ At step $3$ and just before it is received by the NATted router from the Internet.

What are the source and destination IP addresses for this datagram? What are

the source and destination port numbers for the TCP segment in this IP

datagram?

$($iv$)$ At step $4,$ what are the source and destination IP addresses for this datagram?

Also what are the source and destination port numbers for the TCP segment in

this IP datagram? Identify the differences in datagram's IP addresses and port

numbers between step $3$ and step $4$