Infa 620 laboratory 3: identifying tcp conversations

FIND A SOLUTION AT Academic Writers Bay

  INFA 620 Laboratory 3: Identifying TCP Conversations
Context As in Lab 2, you will be using Wireshark. You will continue with packet analysis. You will examine network traffic with a display filter. You can perform this exercise either using Wireshark on your machine or a remote lab supplied by UMUC. I encourage that you carry out the exercise using the remote Lab. The instructions to use the remote UMUC machine is provided in the Accessing Remote Virtual Lab using VPN module under Course Content. A packet trace of normal network traffic will contain more than just the packets you want to look at. You can apply a display filter to isolate conversations within the trace. For this exercise you will use a trace file of a student at home using a browser to connect to UMUC. The trace captures the traffic that resulted when the student pointed a browser to www.umuc.edu. If you are using an older, or newer version of Wireshark, or different OS some of the buttons (options) may be in different positions/locations. Assignment Answer the following questions about trace file EX03 www_umuc_edu.cap. Download trace file EX03 www_umuc_edu.cap from the LEO Lab 3 assignment folder and open it with Wireshark. (If you are using the UMUC remote facility, the file is in the Lab3Folder on the desktop.) 
1. Find the first TCP handshake. What are the packet numbers in the handshake? The three packet numbers ____, _____, and _____ (20 Points). 
2. What is the IP address of the host that started the handshake? __________________ (15 Points) 
3. What is the TCP port connection pair for this handshake? ______, ______ (15 Points) 
4. In the first packet of the handshake, the source port is the ephemeral port this host wants to use for the connection, and the destination port indicates the application the host wants to use on the serving host. What application does the host want to use on the serving host?______________ (15 Points) 
5. Look at packet number 14. Is this part of the conversation initiated by the first handshake? ______ (15 Points) 
Build a filter to see only the first handshake and the conversation for this connection. • Click Analyze (or “Edit” on other versions of ethereal) and select Display Filters from the drop-down list. This brings you to the Edit Display Filters List. • Click “Expression” • Expand TCP (click the plus sign next to TCP), and highlight “Source (src.port)”. • In the Relation section highlight == . • In the Value field type the source port used by the host that initiated the conversation. (The source port should be 1097 in this example). • Click “OK”. Now there is a filter string in the Edit Display Filter List window. (The filter string should be “tcp.port == 1097”.) • In the Filter name box type “Conversation on Source Port 1097”. Click New, then OK. Now you have defined a filter (but not yet applied it). Apply the filter to the trace file. • Find the Filter button near the top left corner of the window and click it. (Note for older versions: If you don’t see the Filter button, make sure the browser window is maximized and your task bar is not covering the bottom.) • Highlight “Conversation on Source Port 1097” and click Apply. (You will see the filter string in the filter field. You could also have typed in the filter by hand. You can take the filter off by clicking the Clear button next to the filter field at the bottom.). The handshake establishes the initial sequence numbers for each connection. Try to follow the sequence numbers in the conversation. Now change the display to show relative sequence numbers: • Click Edit and select Preferences from the drop-down list. • Drill down into Protocols until you get to TCP. • Highlight TCP and select the options, “Analyze TCP sequence numbers” and “Relative sequence numbers and window scaling.” Click OK. Try again to follow the sequence numbers. 6. You cannot see the “next sequence number” in the summary pane for packet number 6. Look for it in the protocol tree pane. Explain why packet number 7 says “ACK =344.” (20 Points) Post your answer to the assignment folder for LAB3. Extra practice
   n)`7

• WE OFFER THE BEST CUSTOM PAPER WRITING SERVICES. WE HAVE DONE THIS QUESTION BEFORE, WE CAN ALSO DO IT FOR YOU.
• Assignment status: Already Solved By Our Experts
• (USA, AUS, UK & CA PhD. Writers)
• CLICK HERE TO GET A PROFESSIONAL WRITER TO WORK ON THIS PAPER AND OTHER SIMILAR PAPERS, GET A NON PLAGIARIZED PAPER FROM OUR EXPERTS

QUALITY: 100% ORIGINAL PAPER – NO PLAGIARISM – CUSTOM PAPER

Why Choose Us?

How It Works

• Click on the “Place Your Order” tab at the top menu or “Order Now” icon at the bottom and a new page will appear with an order form to be filled.
• Fill in your paper’s requirements in the “PAPER DETAILS” section.
• Fill in your paper’s academic level, deadline, and the required number of pages from the drop-down menus.
• Click “CREATE ACCOUNT & SIGN IN” to enter your registration details and get an account with us for record-keeping and then, click on “PROCEED TO CHECKOUT” at the bottom of the page.
• From there, the payment sections will show, follow the guided payment process and your order will be available for our writing team to work on it.

About AcademicWritersBay.com

AcademicWritersBay.com is an easy-to-use and reliable service that is ready to assist you with your papers 24/7/ 365days a year. 99% of our customers are happy with their papers. Our team is efficient and will always tackle your essay needs comprehensively assuring you of excellent results. Feel free to ask them anything concerning your essay demands or Order.

AcademicWritersBay.com is a private company that offers academic support and assistance to students at all levels. Our mission is to provide proficient and high quality academic services to our highly esteemed clients. AcademicWritersBay.com is equipped with competent and proficient writers to tackle all types of your academic needs, and provide you with excellent results. Most of our writers are holders of master’s degrees or PhDs, which is an surety of excellent results to our clients. We provide assistance to students all over the world.
We provide high quality term papers, research papers, essays, proposals, theses and many others. At AcademicWritersBay.com, you can be sure of excellent grades in your assignments and final exams.