DMIT1518 Assignment 6 Part 2F - ARP and Ethernet [13 marks] Before starting this assignment, it...

Transcribed Image Text:

DMIT1518 Assignment 6 Part 2F - ARP and Ethernet [13 marks] Before starting this assignment, it is advisable to have a backup of your Windows 10 VM; step 5 will be a permanent change. Capture ARP Packets 1. Power on (or resume) your Windows 10 VM and sign in with your local account 2. Start the Wireshark packet analyzer 3. Create an ARP filter 4. Click "Capture Options", check the box for your interface (if not checked) and click "Start" 5. Open a command prompt as Administrator and enter arp -a: This will display the current ARP cache 6. Now type in arp -d*: This will clear the current ARP cache (have a look again to see) on. Administrator: Command Prompt Microsoft Windows [Version 10.0.10240] (c) 2015 Microsoft Corporation. All rights reserved. C:\Windows\system32>arp -a Interface: 192.168.202.136 --- 0x6 Internet Address 192.168.202.2 192.168.202.254 192.168.202.255 224.0.0.22 224.0.0.252 255.255.255.255 Physical Address 00-50-56-fe-4b-97 00-50-56-ef-87-68 ff-ff-ff-ff-ff-ff 01-00-5e-00-00-16 01-00-5e-00-00-fc ff-ff-ff-ff-ff-ff Type dynamic dynamic static static static static C:\windows\system32>arp -d * C:\Windows\system32> 7. Open your web browser and go to www.nait.ca. Return to Wireshark and stop the capture 8. 9. Answer the following questions based on this capture ARP and Ethernet Questions 1. Include a screen shot of the packet capture here. [2 marks] [Insert screenshot here] 2. What is the IP address that ARP is requesting the MAC for? Is this the MAC for www.nait.ca, explain what has happened? [3 marks] Target MAC address 3. What is the difference between the ARP request and the response in terms of transmission? Explain (Hint, what are the values in the destination column?). [2 marks] 4. Explain why there is padding in the Ethernet header. [2 marks] 5. What is the value of an Ethernet broadcast address? [1 mark] 6. Why is the ARP request only 42 bytes long? Is this accurate? Explain. [3 marks] Last saved: Sunday, June 12, 2022 (8:22 AM) Page 1 of 2 DMIT1518 Assignment 6 Part 2F - ARP and Ethernet [13 marks] Before starting this assignment, it is advisable to have a backup of your Windows 10 VM; step 5 will be a permanent change. Capture ARP Packets 1. Power on (or resume) your Windows 10 VM and sign in with your local account 2. Start the Wireshark packet analyzer 3. Create an ARP filter 4. Click "Capture Options", check the box for your interface (if not checked) and click "Start" 5. Open a command prompt as Administrator and enter arp -a: This will display the current ARP cache 6. Now type in arp -d*: This will clear the current ARP cache (have a look again to see) on. Administrator: Command Prompt Microsoft Windows [Version 10.0.10240] (c) 2015 Microsoft Corporation. All rights reserved. C:\Windows\system32>arp -a Interface: 192.168.202.136 --- 0x6 Internet Address 192.168.202.2 192.168.202.254 192.168.202.255 224.0.0.22 224.0.0.252 255.255.255.255 Physical Address 00-50-56-fe-4b-97 00-50-56-ef-87-68 ff-ff-ff-ff-ff-ff 01-00-5e-00-00-16 01-00-5e-00-00-fc ff-ff-ff-ff-ff-ff Type dynamic dynamic static static static static C:\windows\system32>arp -d * C:\Windows\system32> 7. Open your web browser and go to www.nait.ca. Return to Wireshark and stop the capture 8. 9. Answer the following questions based on this capture ARP and Ethernet Questions 1. Include a screen shot of the packet capture here. [2 marks] [Insert screenshot here] 2. What is the IP address that ARP is requesting the MAC for? Is this the MAC for www.nait.ca, explain what has happened? [3 marks] Target MAC address 3. What is the difference between the ARP request and the response in terms of transmission? Explain (Hint, what are the values in the destination column?). [2 marks] 4. Explain why there is padding in the Ethernet header. [2 marks] 5. What is the value of an Ethernet broadcast address? [1 mark] 6. Why is the ARP request only 42 bytes long? Is this accurate? Explain. [3 marks] Last saved: Sunday, June 12, 2022 (8:22 AM) Page 1 of 2