Exploring TCP and UDP based on Kurose and Ross (Computer Networking: A Top-Down Approach) May 15, 2018
|
|
- Alban Arnold
- 6 years ago
- Views:
Transcription
1 Exploring TCP and UDP based on Kurose and Ross (Computer Networking: A Top-Down Approach) May 15, 2018
2 Exploring TCP Description Capturing a bulk TCP transfer from your computer to a remote server. In this lab, we ll investigate the behavior of TCP protocol in detail. We ll do so by analyzing a trace of the TCP segments sent and received in transferring a 150KB file (containing the text of Lewis Carrol s Alice s Adventures in Wonderland) from your computer to a remote server. We ll also briefly consider TCP connection setup and we ll investigate the performance of the TCP connection between your computer and the server.
3 Exploring TCP Preparing for upload STEPS (Preparing for upload): 1. Start up your web browser. Go to and retrieve an ASCII copy of Alice in Wonderland. Store this file somewhere on your computer. 2. Next go to 3. Use the Browse button in this form to enter the name of the file (full path name) on your computer containing Alice in Wonderland (or do so manually). Do not press the Upload alice.txt file button yet.
4 Exploring TCP Capturing the upload STEPS (Capturing the upload): 4. Start up Wireshark and begin packet capture: Capture->Start and then press OK on the Wireshark Packet Capture Options screen (we ll not need to select any options here). 5. Returning to your browser, press the Upload alice.txt file button to upload the file to the gaia.cs.umass.edu server. Once the file has been uploaded, a short congratulations message will be displayed in your browser window. 6. Stop Wireshark packet capture.
5 Exploring TCP Exercise 1 a) What is the IP address and TCP port number used by your client computer (source) to transfer the file to gaia.cs.umass.edu? Client computer (source) IP address: TCP port number: b) What is the IP address and port number used by gaia.cs.umass.edu to receive the file? Fill the gaps. Destination computer: gaia.cs.umass.edu IP address: TCP port number:
6 Exercise 1 - Hint It should be clear which two IPs and port are involved. Consider which machine is sending what types of messages to determine which belongs to the server and which to the client. If unsure: compare with your neighbor; what address would be the same and which one different. Can you now explain it with the point above?
7 Exploring TCP Exercise 2 What is the sequence number of the TCP SYN segment that is used to initiate the TCP connection between the client computer and gaia.cs.umass.edu? Sequence number of TCP SYN = What is it in the segment that identifies the segment as a SYN segment? (Look at flags)
8 Exercise 2 Example solution Solution in sample Packet Trace
9 Exploring TCP Exercise 3 Examine the trace to answer the following questions: a) What is the sequence number of the SYNACK segment sent by gaia.cs.umass.edu to the client computer in reply to the SYN? Seq number of SYNACK segment = b) What is the value of the ACKnowledgement field in the SYNACK segment? How did gaia.cs.umass.edu determine that value? ACKnowledgement field = c) What is it in the segment that identifies the segment as a SYNACK segment? (Check flags)
10 Exploring TCP Exercise 4 What is the sequence number of the TCP segment containing the HTTP POST command? Note that in order to find the POST command, you ll need to dig into the packet content field at the bottom of the Wireshark window, looking for a segment with a POST within its DATA field. Sequence number of TCP segment =
11 Exercise 4 Sample solution Solution in sample Packet Trace
12 Exploring TCP Exercise 5 Consider the TCP segment containing the HTTP POST as the first segment in the TCP connection. We aim to calculate Estamated RTT after 3 rd segment: What are the sequence numbers of the first six segments in the TCP connection (including the segment containing the HTTP POST)? At what time was each segment sent? When was the ACK for each segment received? Given the difference between when each TCP segment was sent, and when its acknowledgement was received, what is the RTT value for each of the three segments? What is the EstimatedRTT value after 3 rd segment in the TCP connection? Assume that the value of the EstimatedRTT is equal to the measured RTT for the first segment, and then is computed using the EstimatedRTT formula.
13 Exploring TCP Exercise 5 step by step gathering the information Fill the table based on your packet capturing file Sequence Number Sent Time ACK Received Time RTT (seconds) Segment #1 Segment #2 Segment #3
14 Exploring TCP Exercise 5 step by step calculating RTT Calculate estimatedrtt after 3 rd segment reception in your captured packet file EstimatedRTT =
15 Exploring TCP Exercise 6 What are the lengths of TCP segments? Segment #1 Segment #2 Segment #3 Length of TCP segment
16 Exploring UDP Capture some UDP traffic There are many ways to cause your computer to send and receive UDP messages since UDP is widely used as a transport protocol. The easiest options are to: 1. Do nothing but wait for a while. UDP is used for many system protocols that typically run in the background and produce small amounts of traffic, e.g., DHCP for IP address assignment and NTP for time synchronization. 2. Use your browser to visit sites. UDP is used by DNS for resolving domain names to IP addresses, so visiting fresh sites will cause DNS traffic to be sent. Be careful not to visit unsafe sites; pick recommended sites or sites you know about but have not visited recently. Simply browsing the web is likely to cause a steady stream of DNS traffic. 3. Start up a voice-over-ip call with your favorite client. UDP is used by RTP, which is the protocol commonly used to carry media samples in a voice or video call over the Internet.
17 Exploring UDP EXERCISE 1 Select one packet. Answer the following questions directly from what you observe in the packet trace. (Do not look in the textbook!) 1. From this packet, determine how many fields there are in the UDP header. Name these fields.
18 EXERCISE 1 Sample solution Solution in sample packet trace
19 Exploring UDP EXERCISE From the packet content field, determine the length (in bytes) of each of the UDP header fields. 3. The value in the Length field is the length of what? Verify your claim with your captured UDP packet. 4. 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 IP header.
20 Exercise 4 solution
21 Lessons Learned Practiced Wireshark skills and the ability to extract specific pieces of information. Seen the TCP and UDP protocols in practice. Try to link this to the theory about them, e.g. can you recognize the TCP congestion avoidance in action? what types of applications use UDP why is UDP chosen over TCP for these?
Lab Assignment 3 for ECE374
Lab Assignment 3 for ECE374 Posted: 02/25/18 Due: 03/08/18 In this lab, we ll take a quick look at the UDP and TCP transport protocol. Whenever possible you should hand in a Wireshark screenshot that you
More informationBefore beginning this lab, you ll probably want to review sections 3.5 and 3.7 in the text. 1
Wireshark Lab: TCP Version: 2.0 2007 J.F. Kurose, K.W. Ross. All Rights Reserved Computer Networking: A Topdown Approach, 4 th edition. In this lab, we ll investigate the behavior of TCP in detail. We
More informationProblem Set 6 Due: Start of Class, October 26
CS242 Computer Networks Handout # 12 Randy Shull October 19, 2017 Wellesley College Problem Set 6 Due: Start of Class, October 26 Reading: Kurose & Ross, Sections 3.4, 3.5 Wireshark Lab [11] This exercise
More informationWireshark Lab: TCP v7.0
Wireshark Lab: TCP v7.0 Supplement to Computer Networking: A Top-Down Approach, 7th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve me and I understand. Chinese proverb
More informationBefore beginning this lab, you ll probably want to review sections 3.5 and 3.7 in the text.
Ethereal Lab: TCP In this lab, we ll investigate the behavior of TCP in detail. We ll do so by analyzing a trace of the TCP segments sent and received in transferring a 150KB file (containing the text
More informationEE586 Homework and Laboratory #5 Due November 3, 2010
EE586 Homework and Laboratory #5 Due November 3, 2010 The first 5 problems are on chapter 4, while the last two, one for grad student only and one wireshark are on chapter 3. Maximum points for undergraduate:
More informationSubmit your captured trace file from the TCP lab exercise (Section 1 describes how this can be done).
TCN 5030 - Project 2 Overview: This project will give you hands-on experience with the Wireshark network protocol analyzer, by investigating the behavior of TCP. Wireshack is a popular open-source tool
More informationThe trace file is here: https://kevincurran.org/com320/labs/wireshark/trace-udp.pcap
Lab Exercise UDP Objective To look at the details of UDP (User Datagram Protocol). UDP is a transport protocol used throughout the Internet as an alternative to TCP when reliability is not required. It
More information4. What is the sequence number of the SYNACK segment sent by spinlab.wpi.edu to the client computer in reply to the SYN? Also Seq=0 (relative
1. What is the IP address and TCP port number used by your client computer (source) to transfer the file to spinlab.wpi.edu? My computer is at 10.211.55.3. The source port is 49247. See screenshot below.
More informationLab Exercise UDP. Objective. Requirements. Step 1: Capture a Trace
Lab Exercise UDP Objective To look at the details of UDP (User Datagram Protocol). UDP is a transport protocol used throughout the Internet as an alternative to TCP when reliability is not required. It
More informationComputer communication EDA343/DIT420 Lab 1
Computer communication EDA343/DIT420 Lab 1 Packet and Traffic Analysis Using Network Sniffing Software 1. There are three assignments in this course. First two assignments are in form of programming or
More informationWireshark Lab: HTTP SOLUTION
Wireshark Lab: HTTP SOLUTION Supplement to Computer Networking: A Top-Down Approach, 7th ed., J.F. Kurose and K.W. Ross 2005-2012, J.F Kurose and K.W. Ross, All Rights Reserved The following screen shots
More informationLab Exercise UDP & TCP
Lab Exercise UDP & TCP Objective UDP (User Datagram Protocol) is an alternative communications protocol to Transmission Control Protocol (TCP) used primarily for establishing low-latency and loss tolerating
More informationUNI CS 3470 Networking Project 5: Using Wireshark to Analyze Packet Traces 12
UNI CS 3470 Networking Project 5: Using Wireshark to Analyze Packet Traces 12 Due Wednesday, 12/7, at 11:59:59 PM. One s understanding of network protocols can often be greatly deepened by seeing protocols
More informationLaboratory Manual for CENG460 Communications Networks
Department of Electrical and Computer Engineering Laboratory Manual for CENG460 Communications Networks By Ruonan Zhang, Emad Shihab, Zhe Yang, Xuan Wang, Lei Zheng, and Lin Cai Copyright 2012 University
More informationCOMP416 Lab (7) IEEE Daoyuan
COMP416 Lab (7) IEEE 802.11 Daoyuan Content Investigate 802.11 wireless network protocol. Beacon Frames Data Transfer Association/Disassociation Learn to use appropriate Wireshark display filter to analyze
More informationWireshark Lab: Getting Started v6.0
Wireshark Lab: Getting Started v6.0 Supplement to Computer Networking: A Top-Down Approach, 6 th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve me and I understand.
More informationProblem Set 9 Due: Start of class, December 4
CS242 Computer Networks Handout # 18 Randy Shull November 27, 2017 Wellesley College Problem Set 9 Due: Start of class, December 4 Reading: Kurose & Ross, Sections 6.1 through 6.5 Wireshark Lab [16] In
More informationWireshark Lab: Getting Started
Wireshark Lab: Getting Started Tell me and I forget. Show me and I remember. Involve me and I understand. Chinese proverb 2005-2019, J.F Kurose and K.W. Ross, All Rights Reserved Introduction to Wireshark
More informationProblem Set 7 Due: Start of Class, November 2
CS242 Computer Networks Handout # 14 Randy Shull October 26, 2017 Wellesley College Problem Set 7 Due: Start of Class, November 2 Reading: Kurose & Ross, Sections 3.6, 3.7, 3.8 Wireshark Lab [26] In these
More informationEthereal Lab: Getting Started
Ethereal Lab: Getting Started Version: July 2005 2005 J.F. Kurose, K.W. Ross. All Rights Reserved Computer Networking: A Topdown Approach Featuring the Internet, 3 rd edition. Tell me and I forget. Show
More information15-441: Computer Networks Homework 3
15-441: Computer Networks Homework 3 Assigned: Oct 29, 2013 Due: Nov 12, 2013 1:30 PM in class Name: Andrew ID: 1 TCP 1. Suppose an established TCP connection exists between sockets A and B. A third party,
More informationWireshark Lab: Getting Started v7.0
Wireshark Lab: Getting Started v7.0 Supplement to Computer Networking: A Top-Down Approach, 7th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve me and I understand.
More informationWireshark Lab: Getting Started v6.0
Wireshark Lab: Getting Started v6.0 Supplement to Computer Networking: A Top-Down Approach, 6 th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve me and I understand.
More informationWireshark Lab: Getting Started v7.0
Wireshark Lab: Getting Started v7.0 Adapted by HMC from the supplement to Computer Networking: A Top-Down Approach, 7 th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve
More informationUniversity of Maryland Baltimore County Department of Information Systems Spring 2015
University of Maryland Baltimore County Department of Information Systems Spring 2015 IS 450/650: Data Communications and Networks Homework Assignment 1 Wireshark Lab (Handed Out: February 3, 2015 (Tuesday),
More informationEthereal Lab: Getting Started
Ethereal Lab: Getting Started One s understanding of network protocols can often be greatly deepened by seeing protocols in action and by playing around with protocols observing the sequence of messages
More informationProject points. CSE422 Computer Networking Spring 2018
Project 1 100 points Introduction One s understanding of network protocols can often be greatly deepened by seeing protocols in action and by playing around with protocols observing the sequence of messages
More informationWireshark Lab: Getting Started v6.0 Supplement to Computer Networking: A Top-Down Approach, 6th ed., J.F. Kurose and K.W. Ross
Wireshark Lab: Getting Started v6.0 Supplement to Computer Networking: A Top-Down Approach, 6th ed., J.F. Kurose and K.W. Ross 2005-21012, J.F Kurose and K.W. Ross, All Rights Reserved In the Wireshark
More informationLab: 2. Wireshark Getting Started
Lab: 2 Wireshark Getting Started One s understanding of network protocols can often be greatly deepened by seeing protocols in action and by playing around with protocols observing the sequence of messages
More informationLab Exercise Protocol Layers
Lab Exercise Protocol Layers Objective To learn how protocols and layering are represented in packets. They are key concepts for structuring networks that are covered in 1.3 and 1.4 of your text. Review
More informationWireshark Lab: HTTP v6.1
Wireshark Lab: HTTP v6.1 Supplement to Computer Networking: A Top-Down Approach, 6 th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve me and I understand. Chinese proverb
More informationVERSION Lab 3: Link Layer
Lab 3: Link Layer Objective In this lab, you will investigate Ethernet and the ARP protocol. You will also prove you are a Wireshark Ninja by dissecting an unknown protocol. Knowledge from Lecture 20 and
More informationWireshark Lab: v6.0
Wireshark Lab: 802.11 v6.0 Supplement to Computer Networking: A Top-Down Approach, 6 th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve me and I understand. Chinese
More informationGoals - to become acquainted with Wireshark, and make some simple packet captures and observations
CSCI 395: Networks Lab 2: Introductory Wireshark Lab, Current state of the Internet, and Transmission/ Delay Due: 2/19/16 at the beginning of class 20 Points Part I Goals - to become acquainted with Wireshark,
More informationWireshark Lab: HTTP. 1. The Basic HTTP GET/response interaction
Wireshark Lab: HTTP Version: 2.0 (June 2007) 2007 J.F. Kurose, K.W. Ross. All Rights Reserved Computer Networking: A Topdown Approach, 4 th edition. Having gotten our feet wet with the Wireshark packet
More informationWireshark Lab: Getting Started
Wireshark Lab: Getting Started This following content is edited from the wireshark lab exercise provided by J.F. Kurose, and K.W. Ross, "Computer Networking: A Top down approach" 5th ed. Pearson, 2010.
More informationTo see the details of TCP (Transmission Control Protocol). TCP is the main transport layer protocol used in the Internet.
Lab Exercise TCP Objective To see the details of TCP (Transmission Control Protocol). TCP is the main transport layer protocol used in the Internet. The trace file is here: https://kevincurran.org/com320/labs/wireshark/trace-tcp.pcap
More informationWireshark Lab: Getting Started
Wireshark Lab: Getting Started Version: 2.0 2007 J.F. Kurose, K.W. Ross. All Rights Reserved Computer Networking: A Topdown Approach, 4 th edition. Tell me and I forget. Show me and I remember. Involve
More informationLinux Networking: tcp. TCP context and interfaces
Linux Networking: tcp David Morgan TCP context and interfaces Computer A Computer B application process application process data data data data TCP process TCP process a network 1 TCP purposes and features
More informationWireshark Lab: Ethernet and ARP v6.01
Wireshark Lab: Ethernet and ARP v6.01 Supplement to Computer Networking: A Top-Down Approach, 6 th ed., J.F. Kurose and K.W. Ross Tell me and I forget. Show me and I remember. Involve me and I understand.
More information9. Wireshark I: Protocol Stack and Ethernet
Distributed Systems 205/2016 Lab Simon Razniewski/Florian Klement 9. Wireshark I: Protocol Stack and Ethernet Objective To learn how protocols and layering are represented in packets, and to explore the
More informationWireshark HTTP. Introduction. The Basic HTTP GET/response interaction
Wireshark HTTP Introduction Having gotten our feet wet with the Wireshark packet sniffer in the introductory lab, we re now ready to use Wireshark to investigate protocols in operation. In this lab, we
More informationOSI Transport Layer. objectives
LECTURE 5 OSI Transport Layer objectives 1. Roles of the Transport Layer 1. segmentation of data 2. error detection 3. Multiplexing of upper layer application using port numbers 2. The TCP protocol Communicating
More informationLab - Using Wireshark to Examine TCP and UDP Captures
Topology Part 1 (FTP) Part 1 will highlight a TCP capture of an FTP session. This topology consists of a PC with Internet access. Topology Part 2 (TFTP) Part 2 will highlight a UDP capture of a TFTP session.
More informationCCNA Exploration Network Fundamentals. Chapter 04 OSI Transport Layer
CCNA Exploration Network Fundamentals Chapter 04 OSI Transport Layer Updated: 05/05/2008 1 4.1 Roles of the Transport Layer 2 4.1 Roles of the Transport Layer The OSI Transport layer accept data from the
More informationDepartment Of Computer Science
Department Of Computer Science Laboratory Manual Prepared By: Muhammad Nouman Farooq Lecturer and Course Coordinator Course: Network Security (CS-242) Page 1 of 47 Table of Contents Lab 1- Introduction
More informationNew York University Computer Science Department Courant Institute of Mathematical Sciences
New York University Computer Science Department Courant Institute of Mathematical Sciences Course Title: Data Communication & Networks Course Number: g22.2662-001 Instructor: Jean-Claude Franchitti Session:
More informationObjectives: (1) To learn to capture and analyze packets using wireshark. (2) To learn how protocols and layering are represented in packets.
Team Project 1 Due: Beijing 00:01, Friday Nov 7 Language: English Turn-in (via email) a.pdf file. Objectives: (1) To learn to capture and analyze packets using wireshark. (2) To learn how protocols and
More informationBusiness Data Networks and Security 10th Edition by Panko Test Bank
Business Data Networks and Security 10th Edition by Panko Test Bank Chapter 2 Network Standards 1) Internet standards are published as. A) RFCs B) IETFs C) TCP/IPs D) Internet Protocols Question: 1a Objective:
More informationTCP/IP Transport Layer Protocols, TCP and UDP
TCP/IP Transport Layer Protocols, TCP and UDP Learning Objectives Identify TCP header fields and operation using a Wireshark FTP session capture. Identify UDP header fields and operation using a Wireshark
More informationCOMS3200/7201 Computer Networks 1 (Version 1.0)
COMS3200/7201 Computer Networks 1 (Version 1.0) Assignment 3 Due 8pm Monday 29 th May 2017. V1 draft (hopefully final) Note that the assignment has three parts Part A, B & C, each worth 50 marks. Total
More informationUDP and TCP. Introduction. So far we have studied some data link layer protocols such as PPP which are responsible for getting data
ELEX 4550 : Wide Area Networks 2015 Winter Session UDP and TCP is lecture describes the two most common transport-layer protocols used by IP networks: the User Datagram Protocol (UDP) and the Transmission
More informationCCNA 1 Chapter 7 v5.0 Exam Answers 2013
CCNA 1 Chapter 7 v5.0 Exam Answers 2013 1 A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the
More informationJust enough TCP/IP. Protocol Overview. Connection Types in TCP/IP. Control Mechanisms. Borrowed from my ITS475/575 class the ITL
Just enough TCP/IP Borrowed from my ITS475/575 class the ITL 1 Protocol Overview E-Mail HTTP (WWW) Remote Login File Transfer TCP UDP RTP RTCP SCTP IP ICMP ARP RARP (Auxiliary Services) Ethernet, X.25,
More informationCSE4344 Project 2 (Spring 2017) Wireshark Lab: HTTP
Objectives CSE4344 Project 2 (Spring 2017) Wireshark Lab: HTTP To get familiar with capturing network packets using Wireshark. To explore the HTTP message formats and basic operations of HTTP protocol.
More informationLab 2. All datagrams related to favicon.ico had been ignored. Diagram 1. Diagram 2
Lab 2 All datagrams related to favicon.ico had been ignored. Diagram 1 Diagram 2 1. Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the server running? According to the diagram
More informationWireshark intro. Introduction. Packet sniffer
Wireshark intro Introduction One s understanding of network protocols can often be greatly deepened by seeing protocols in action and by playing around with protocols observing the sequence of messages
More informationCS164 Final Exam Winter 2013
CS164 Final Exam Winter 2013 Name: Last 4 digits of Student ID: Problem 1. State whether each of the following statements is true or false. (Two points for each correct answer, 1 point for each incorrect
More informationCOMPUTER NETWORKS. CPSC 441, Winter 2016 Prof. Mea Wang Department of Computer Science University of Calgary
COMPUTER NETWORKS CPSC 441, Winter 2016 Prof. Mea Wang Department of Computer Science University of Calgary Introduction: Wireshark and tshark Running tshark Running Wireshark Exercise: Analyze HTTP traffic
More informationLab What are the SSIDs of the two access points that are issuing most of the beacon frames in this trace?
Lab 6 1. What are the SSIDs of the two access points that are issuing most of the beacon frames in this trace? They are Linksys_SES_24086 and 30 Munroe St. 2. What are the intervals of time between the
More informationThe trace is here: https://kevincurran.org/com320/labs/wireshark/trace-dhcp.pcap
Lab Exercise DHCP Objective To see how DHCP (Dynamic Host Configuration Protocol) works. The trace is here: https://kevincurran.org/com320/labs/wireshark/trace-dhcp.pcap Network Setup Recall that DHCP
More informationTransport Layer Review
Transport Layer Review Mahalingam Mississippi State University, MS October 1, 2014 Transport Layer Functions Distinguish between different application instances through port numbers Make it easy for applications
More informationGetting Wireshark. Detailed installing steps can be found on the Internet, so this tutorial won t cover this part.
Wireshark Tutorial Getting Wireshark Wireshark for Windows and Mac OS X can be easily downloaded from its official website. If you are Linux users, you ll probably find Wireshark in its package repositories.
More information6.1 Internet Transport Layer Architecture 6.2 UDP (User Datagram Protocol) 6.3 TCP (Transmission Control Protocol) 6. Transport Layer 6-1
6. Transport Layer 6.1 Internet Transport Layer Architecture 6.2 UDP (User Datagram Protocol) 6.3 TCP (Transmission Control Protocol) 6. Transport Layer 6-1 6.1 Internet Transport Layer Architecture The
More informationTCP : Fundamentals of Computer Networks Bill Nace
TCP 14-740: Fundamentals of Computer Networks Bill Nace Material from Computer Networking: A Top Down Approach, 6 th edition. J.F. Kurose and K.W. Ross Administrivia Lab #1 due now! Reminder: Paper Review
More informationProtocol Layers & Wireshark TDTS11:COMPUTER NETWORKS AND INTERNET PROTOCOLS
Protocol Layers & Wireshark TDTS11:COMPUTER NETWORKS AND INTERNET PROTOCOLS Mail seban649@student.liu.se Protocol Hi Hi Got the time? 2:00 time TCP connection request TCP connection response Whats
More information4. The transport layer
4.1 The port number One of the most important information contained in the header of a segment are the destination and the source port numbers. The port numbers are necessary to identify the application
More informationModule : ServerIron ADX Packet Capture
Module : ServerIron ADX Packet Capture Objectives Upon completion of this module, you will be able to: Describe Brocade ServerIron ADX (ADX) Packet Capture feature Configure and verify the Packet Capture
More informationSC/CSE 3213 Winter Sebastian Magierowski York University CSE 3213, W13 L8: TCP/IP. Outline. Forwarding over network and data link layers
SC/CSE 3213 Winter 2013 L8: TCP/IP Overview Sebastian Magierowski York University 1 Outline TCP/IP Reference Model A set of protocols for internetworking The basis of the modern IP Datagram Exchange Examples
More informationWireshark Lab: DNS Please note that this exercise is designed for Windows machines. Change the commands accordingly if you are using Linux.
Wireshark Lab: DNS Please note that this exercise is designed for Windows machines. Change the commands accordingly if you are using Linux. Version: 2.0 2007 J.F. Kurose, K.W. Ross. All Rights Reserved
More informationComputer Science 461 Midterm Exam March 14, :00-10:50am
NAME: Login name: Computer Science 461 Midterm Exam March 14, 2012 10:00-10:50am This test has seven (7) questions, each worth ten points. Put your name on every page, and write out and sign the Honor
More informationNetworking Background
Networking Background CMSC 414 October 30, 2017 General Overview We are going to take a quick look at What a network protocol is The abstract design of the network The 7-Layer network stack Protocols We
More information4.0.1 CHAPTER INTRODUCTION
4.0.1 CHAPTER INTRODUCTION Data networks and the Internet support the human network by supplying seamless, reliable communication between people - both locally and around the globe. On a single device,
More informationUse of the TCP/IP Protocols and the OSI Model in Packet Tracer
Communication Networks [Netw501] Spring 2018 Tutorial 3 Packet Tracer Activity 3 Use of the TCP/IP Protocols and the OSI Model in Packet Tracer Introduction: In Packet Tracer simulation mode, detailed
More informationPaper solution Subject: Computer Networks (TE Computer pattern) Marks : 30 Date: 5/2/2015
Paper solution Subject: Computer Networks (TE Computer- 2012 pattern) Marks : 30 Date: 5/2/2015 Q1 a) What is difference between persistent and non persistent HTTP? Also Explain HTTP message format. [6]
More informationCS450 Introduc0on to Networking Lecture 14 TCP. Phu Phung Feb 13, 2015
CS450 Introduc0on to Networking Lecture 14 TCP Phu Phung Feb 13, 2015 Next lecture (Feb 16) Assignment 3 (No iclicker ques0ons) Wireshark links Guest lecture on Monday Feb 23 rd DNS Security Midterm exam
More informationinterface Question 1. a) Applications nslookup/dig Web Application DNS SMTP HTTP layer SIP Transport layer OSPF ICMP IP Network layer
TDTS06 Computer networks, August 23, 2008 Sketched answers to the written examination, provided by Juha Takkinen, IDA, juhta@ida.liu.se. ( Sketched means that you, in addition to the below answers, need
More informationLecture 12: Transport Layer TCP again
Lecture 12: Transport Layer TCP again COMP 332, Spring 2018 Victoria Manfredi Acknowledgements: materials adapted from Computer Networking: A Top Down Approach 7 th edition: 1996-2016, J.F Kurose and K.W.
More informationLab 4: Network Packet Capture and Analysis using Wireshark
Lab 4: Network Packet Capture and Analysis using Wireshark 4.1 Details Aim: To provide a foundation in network packet capture and analysis. You may be faced with network traffic analysis, from traffic
More informationCCNA R&S: Introduction to Networks. Chapter 7: The Transport Layer
CCNA R&S: Introduction to Networks Chapter 7: The Transport Layer Frank Schneemann 7.0.1.1 Introduction 7.0.1.2 Class Activity - We Need to Talk Game 7.1.1.1 Role of the Transport Layer The primary responsibilities
More informationTCP /IP Fundamentals Mr. Cantu
TCP /IP Fundamentals Mr. Cantu OSI Model and TCP/IP Model Comparison TCP / IP Protocols (Application Layer) The TCP/IP subprotocols listed in this layer are services that support a number of network functions:
More informationICS 351: Networking Protocols
ICS 351: Networking Protocols IP packet forwarding application layer: DNS, HTTP transport layer: TCP and UDP network layer: IP, ICMP, ARP data-link layer: Ethernet, WiFi 1 Networking concepts each protocol
More informationCSCI 466 Midterm Networks Fall 2013
CSCI 466 Midterm Networks Fall 2013 Name: This exam consists of 6 problems on the following 7 pages. You may use your single-sided hand-written 8 ½ x 11 note sheet and a calculator during the exam. No
More informationNetwork+ Guide to Networks 6 th Edition. Chapter 4 Introduction to TCP/IP Protocols
Network+ Guide to Networks 6 th Edition Chapter 4 Introduction to TCP/IP Protocols Objectives Identify and explain the functions of the core TCP/IP protocols Explain the TCP/IP model and how it corresponds
More informationGetting Started. 1 Earlier versions of these labs used the Ethereal packet analyzer. In May 2006, the developer of Ethereal
Getting Started One s understanding of network protocols can often be greatly deepened by seeing protocols in action and by playing around with protocols observing the sequence of messages exchanged between
More informationB.Sc. (Hons.) Computer Science with Network Security B.Eng. (Hons) Telecommunications B.Sc. (Hons) Business Information Systems
B.Sc. (Hons.) Computer Science with Network Security B.Eng. (Hons) Telecommunications B.Sc. (Hons) Business Information Systems Bridge BTEL/PT BCNS/14/FT BIS/14/FT BTEL/14/FT Examinations for 2014-2015
More informationLecture 08: The Transport Layer (Part 2) The Transport Layer Protocol (TCP) Dr. Anis Koubaa
NET 331 Computer Networks Lecture 08: The Transport Layer (Part 2) The Transport Layer Protocol (TCP) Dr. Anis Koubaa Reformatted slides from textbook Computer Networking a top-down appraoch, Fifth Edition
More informationLab - Using Wireshark to Examine a UDP DNS Capture
Topology Objectives Part 1: Record a PC s IP Configuration Information Part 2: Use Wireshark to Capture DNS Queries and Responses Part 3: Analyze Captured DNS or UDP Packets Background / Scenario If you
More informationLab - Using Wireshark to Examine a UDP DNS Capture
Topology Objectives Part 1: Record a PC s IP Configuration Information Part 2: Use Wireshark to Capture DNS Queries and Responses Part 3: Analyze Captured DNS or UDP Packets Background / Scenario If you
More informationTransport Layer TCP & UDP Week 7. Module : Computer Networks Lecturers : Lucy White Office : 324
Transport Layer TCP & UDP Week 7 Module : Computer Networks Lecturers : Lucy White lbwhite@wit.ie Office : 324 1 Purpose of the Transport Layer The Transport layer provides for the segmentation of data
More informationECPE / COMP 177 Fall Some slides from Kurose and Ross, Computer Networking, 5 th Edition
ECPE / COMP 177 Fall 2012 Some slides from Kurose and Ross, Computer Networking, 5 th Edition Application Layer Transport Layer Network Layer Link Layer Physical Layer 2 Application Layer HTTP DNS IMAP
More informationL12: end to end layer
L12: end to end layer Dina Katabi 6.033 Spring 2007 http://web.mit.edu/6.033 Some slides are from lectures by Nick Mckeown, Ion Stoica, Frans Kaashoek, Hari Balakrishnan, Sam Madden, and Robert Morris
More informationBSc Year 2 Data Communications Lab - Using Wireshark to View Network Traffic. Topology. Objectives. Background / Scenario
BSc Year 2 Data Communications Lab - Using Wireshark to View Network Traffic Topology Objectives Part 1: (Optional) Download and Install Wireshark Part 2: Capture and Analyze Local ICMP Data in Wireshark
More informationLab Assignment 4 ECE374 Spring Posted: 03/22/18 Due: 03/29/18. In this lab, we ll take a quick look at the ICMP and IP protocols.
Lab Assignment 4 ECE374 Spring 2018 Posted: 03/22/18 Due: 03/29/18 In this lab, we ll take a quick look at the ICMP and IP protocols. Whenever possible you should hand in Wireshark screenshots that you
More informationTransport Layer. Gursharan Singh Tatla. Upendra Sharma. 1
Transport Layer Gursharan Singh Tatla mailme@gursharansingh.in Upendra Sharma 1 Introduction The transport layer is the fourth layer from the bottom in the OSI reference model. It is responsible for message
More informationETSF10 Internet Protocols Network Layer Protocols
ETSF10 Internet Protocols Network Layer Protocols 2012, Part 2, Lecture 3.1 Kaan Bür, Jens Andersson Network Layer Protocols IPv4, IPv6 [ed.4 ch.20.3+19.2] [ed.5 ch.22.1.1-2+22.2] Transition from IPv4
More informationLab Two Using Wireshark to Discover IP NAME:
Lab Two Using Wireshark to Discover IP NAME: In this lab, we ll investigate the IP protocol, focusing on the IP datagram. We ll do so by analyzing a trace of IP datagrams sent and received by an execution
More informationDOWNLOAD OR READ : WIRESHARK LAB SOLUTIONS IP PDF EBOOK EPUB MOBI
DOWNLOAD OR READ : WIRESHARK LAB SOLUTIONS IP PDF EBOOK EPUB MOBI Page 1 Page 2 wireshark lab solutions ip wireshark lab solutions ip pdf wireshark lab solutions ip Solution to Wireshark Lab: IP Fig. 1
More informationAnnouncements. No book chapter for this topic! Slides are posted online as usual Homework: Will be posted online Due 12/6
Announcements No book chapter for this topic! Slides are posted online as usual Homework: Will be posted online Due 12/6 Copyright c 2002 2017 UMaine Computer Science Department 1 / 33 1 COS 140: Foundations
More information