[Network Computing] 1) Complete the NAT translation table for this TCP connectio

Question

[Network Computing]

1) Complete the NAT translation table for this TCP connection

2)What are the source and destination ip addresses and port numbers in the ip datagram arriving to the WAN side of the router with interface address 138.76.29.7

Please show steps!! thanks

NAT. Consider the Scenario shown in Figure 2 (Figure 4.22 on page 350 of the textbook in the 6th Edition). Suppose that host 10.0.0.2 initiates a connection. using source port 550() to a Web server listening at port .0 at 128.119.40.186. 1) Complete the NAT translation table for this TCP connection 2)What are the source and destination ip addresses and port numbers in the ip datagram arriving to the WAN side of the router with interface address 138.76.29.7

Explanation / Answer

NAT translation table

The TCP/IP protocols include a multiplexing facility so that any computer can maintain multiple simultaneous connections with a remote computer. It is this multiplexing facility that is the key to single address NAT.

To multiplex several connections to a single destination, client computers label all packets with unique "port numbers". Each IP packet starts with a header containing the source and destination addresses and port numbers:

This combination of numbers completely defines a single TCP/IP connection. The addresses specify the two machines at each end, and the two port numbers ensure that each connection between this pair of machines can be uniquely identified.

here nat means network adress table.

2.source ip adress=128.119.40.186 Nd port nmber is 80.

destination ip adress=138.76.29.7 and port number is 5001.

WAN ip adress port number LAN ip adress port number 138.76.29.7 5001 10.0.0.2 5500 128.119.40.186 80 138.76.29.7 5001

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.