Week 1 TCP Lab
Answer the following questions, by opening the Wireshark captured packet
file tcpethereal-trace-1 in http:/gaia.cs.umass.edu/wireshark-labs/wiresharktraces.zip (that is download the trace and open that trace in Wireshark; see
footnote 2). W
Start up your web browser. Go the http:/gaia.cs.umass.edu/wireshark-labs/alice.txt and retrieve an ASCII copy of Alice in Wonderland. Store this
file somewhere on your computer.
Next go to http:/gaia.cs.umass.edu/wireshark-labs/TCP-wiresharkfile1.html.
In this lab, well explore several aspects of the ICMP protocol:
ICMP messages generating by the Ping program;
ICMP messages generated by the Traceroute program;
the format and contents of an ICMP message.
References to figures and sections are for th
Is your browser running HTTP version 1.0 or 1.1? What version of HTTP is the
The request sent from my machine was HTTP version 1.1, the response from
the server was also HTTP version 1.1
What languages (if any) does your browser indi
Having gotten our feet wet with the Wireshark packet sniffer in the introductory
lab, were now ready to use Wireshark to investigate protocols in operation. In
this lab, well explore several aspects of the HTTP protocol: the basic
Week 3 ICMP Lab
Screenshots of PING and wireshark capture:
1. What is the IP address of your host? What is the IP address of the destination host?
Address of my machine is 10.8.68.73, destination host is 18.104.22.168
2. Why is it that an ICMP packe
The Domain Name System (DNS) translates hostnames to IP addresses, fulfilling
a critical role in the Internet infrastructure. In this lab, well take a closer look at
the client side of DNS. Recall that the clients role in the DNS is relatively simple