Networking 1 Lab05

Paige Piper

March 12, 2013

Objective: See what’s going on in a network using Wireshark

Equipment:

  • Computers
  • Command Prompt
  • Wireshark

Notes and Observations:

  • We “sniffed” out HTTPs,DNS’,ICMPs, ARP & DHCPs

Diagrams, flowcharts, and figures:

Image

Fig 1: A pair, request and response, ARP frames

References:

Wireshark

Questions:

What protocols are encapsulated in the DNS query?

  • UDP, IP

Which of these protocols is a transport layer protocol?

  • UDP

What protocols are encapsulated in the ICMP frame?  What do the ICMP initials mean?

  • IP, ICMP(Internet Control Message Protocol)

Approx. how many frames did it take to download the web page for HTTP?

  • 36 frames

List the different protocols that are used…

  • IP, TCP, HTTP

What protocol headers do you see, and what are three field names in each header in the first frame carrying a HTTP GET request packet?

  • IP – Defferentiated Services Field, Flags, Header checksum
  • TCP – flags, checksum, [SEQ/ACK analysis]
  • HTTP – GET/aggregator/cached/tea/center UA – Mozilla/5.0 (compatible;MSIE 9.0; windows NT 6.1; Trident/5.0)\r\n

The type of web server being accessed in the first HTTP Response frame header…

  • Nginx/0.7.67\r\n

Conclusion:

I didn’t understand this lab at all, so I can’t really conclude anything from the above information.  The only reason I was able to get these answers was all due to my partner I was working with.  I felt the lab to be really confusing and a bunch of new information that all went over my head.

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