用Wireshark进行TCP协议分析.doc

TCP/IP 实 验 报 告 实验4用Wireshark进行TCP协议分析 学 院 计算机学 专 业 网络工程 班 级 1班 姓 名 刘小芳 学 号 41009040127 2012． 5 4.1 实验性质 本实验为操作分析性实验。 4.2 实验目的 1. 掌握Wireshark软件的基本使用方法。 2. 掌握基本的网络协议分析方法。 3. 使用Wireshark抓包工具，分析TCP数据报的格式。 4. 加深理解TCP协议的原理及其工作过程。 4.3 实验环境 1. 硬件环境：PC机1台。 2. 网络环境：PC机接入LAN或Internet。 物理地址：00-E0-4C-00-16-78 Ip地址：192.168.0.131 3. 软件环境：Windows操作系统和Wireshark软件。 4.4 实验时 1. ICMP and PingYou should answer the following questions: 1. What is the IP address of your host? What is the IP address of the destination host? 2. Why is it that an ICMP packet does not have source and destination port numbers? 3. Examine one of the ping request packets sent by your host. What are the ICMP type and code numbers? What other fields does this ICMP packet have? How many bytes are the checksum, sequence number and identifier fields? 4. Examine the corresponding ping reply packet. What are the ICMP type and code numbers? What other fields does this ICMP packet have? How many bytes are the checksum, sequence number and identifier fields? 2. ICMP and Traceroute Answer the following questions: 5. What is the IP address of your host? What is the IP address of the target destination host? 6. If ICMP sent UDP packets instead (as in Unix/Linux), would the IP protocol number still be 01 for the probe packets? If not, what would it be? 7. Examine the ICMP echo packet in your screenshot. Is this different from the ICMP ping query packets in the first half of this lab? If yes, how so? 8. Examine the ICMP error packet in your screenshot. It has more fields than the ICMP echo packet. What is included in those fields? 9. Examine the last three ICMP packets received by the source host. How are these packets different from the ICMP error packets? Why are they different? 10. Within the tracert measurements, is there a link whose delay is significantly longer than others? Refer to the screens