### 4.03-2. Network Address Translation (b).Consider the following scenario in which host 10.0.0.1 is communicating with an external web server at IP address 128.119.40.186. The NAT table shows the table entry associated with this TCP flow. What are the source and destination IP address and port numbers at point B?[Note: You can find more examples of problems similar to this here.]#### NAT Translation Table| WAN side addr | LAN side addr || ------------------- | ----------------- || 138.76.29.7, 5051 | 10.0.0.1, 2020 || ...... | ...... |#### Diagram Explanation:The diagram shows a network setup where several devices (IP addresses 10.0.0.1, 10.0.0.2, 10.0.0.3) are connected to a router. The router translates local addresses to global ones via Network Address Translation (NAT).- **Point A**: Data is still within the local network. The source IP (S) is 10.0.0.1 and destination IP (D) is unspecified. - **Point B**: Data is exiting the local network after NAT processing. - **Point C**: Data exits further on a public network side.- **Point D**: Data enters the local network after NAT has translated the addresses back to their internal values.The table and diagram help identify how the NAT process translates internal IP addresses and port numbers to external counterparts.#### Question:What are the source and destination IP address and port numbers at point B?**The source IP address is:** 10.0.0.1 **The destination IP address is:** 138.76.29.7 **The source port number is:** 2020 **The destination port number is:** 5051

Answer: Given host :10.0.0.1 and IP :128:119:40:186

4.03-2. Network Address Translation (b). Consider the following scenario in which host 10.0.0.1 is communicating with an external web server at IP address 128.119.40.186. The NAT table shows the table entry associated with this TCP flow. What are the source and destination IP address and port numbers at point B? [Note: You can find more examples of problems similar to this here.] S: D: B S: D NAT translation table WAN side addr 138.76.29.7, 5051 138.76.29.7 The source IP address is: The destination IP address is: The source port number is: The destination port number is: LAN side addr 10.0.0.1, 2020 10.0.0.4 S D: 10.0.0.1 138.76.29.7 2020 S: D: 5051 A 10.0.0.1 10.0.0.2 10.0.0.3

4.03-2. Network Address Translation (b). Consider the following scenario in which host 10.0.0.1 is communicating with an external web server at IP address 128.119.40.186. The NAT table shows the table entry associated with this TCP flow. What are the source and destination IP address and port numbers at point B? [Note: You can find more examples of problems similar to this here.] S: D: B S: D NAT translation table WAN side addr 138.76.29.7, 5051 138.76.29.7 The source IP address is: The destination IP address is: The source port number is: The destination port number is: LAN side addr 10.0.0.1, 2020 10.0.0.4 S D: 10.0.0.1 138.76.29.7 2020 S: D: 5051 A 10.0.0.1 10.0.0.2 10.0.0.3

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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