Wireshark project computer networks

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Question Description

Wireshark project which is really important. Details are in the attached file. if you have any questions please let me know.

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Wireshark Lab: UDP In this lab, we’ll take a quick look at the UDP transport protocol. As we saw in Chapter 3 of the text, UDP is a streamlined, no-frills protocol. You may want to re-read section 3,3 in the text before doing this lab. Because UDP is simple and sweet, we’ll be able to cover it pretty quickly in this lab. So if you’ve another appointment to run off to in 30 minutes, no need to worry, as you should be able to finish this lab with ample time to spare. Preliminary Steps: 1. Disable IPv6, if necessary. Capture your own packets and answer the questions based on your captured packets. Include screenshots whenever possible. You will lose (many) points if you do not provide necessary screenshots. This project is quite easy. Please read the questions carefully and make things correct in order not to unnecessarily lose points. The Assignment Start capturing packets in Wireshark and then do something that will cause your host to send and receive several UDP packets. It’s also likely that just by doing nothing (except capturing packets via Wireshark) you can capture some UDP segments. For example, DNS, DHCP, and SNMP messages will be carried by UDP segments. And your host may have several background processes that are sending and/or receiving some DNS, DHCP, and SNMP messages. After stopping packet capture, set your packet filter so that Wireshark only displays the UDP packets sent and received at your host. Pick one of these UDP packets and expand the UDP fields in the details window. 1. Select one UDP packet from your trace. From this packet, determine how many fields there are in the UDP header. (You shouldn’t look in the textbook! Answer these questions directly from what you observe in the packet trace.) Name these fields. 2. By consulting the displayed information in Wireshark’s packet content field for this packet, determine the length (in bytes) of each of the UDP header fields. 3. The value in the Length field is the length of what? (You can consult the text for this answer). Verify your claim with your captured UDP packet. 4. What is the maximum number of bytes that can be included in a UDP payload? (Hint: the answer to this question can be determined by your answer to 2. above) 5. What is the largest possible source port number? (Hint: see the hint in 4.) 6. What is the protocol number for UDP? Give your answer in both hexadecimal and decimal notation. To answer this question, you’ll need to look into the Protocol field of the IP datagram containing this UDP segment (see Figure 4.13 in the text, and the discussion of IP header fields). 7. Examine a pair of UDP packets in which your host sends the first UDP packet and the second UDP packet is a reply to this first UDP packet. (Hint: for a second packet to be sent in response to a first packet, the sender of the first packet should be the destination of the second packet). Describe the relationship between the port numbers in the two packets. (Hint: you can first find an incoming UDP segment, i.e., with a source IP address as an outside IP address, and a destination IP address as your host’s IP address. Then, find the corresponding outgoing UDP segment with a source IP address as your host’s IP address and a destination IP address as the previous outside IP address.) ...
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Tutor Answer

spyrosm
School: Rice University

Hi again,Fortunately, I managed to install Wireshark on the PC in my job and finish your assignment in no time. You may find the solution in a word document. When needed, I have included screenshots from...

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Review

Anonymous
Good stuff. Would use again.

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