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4 Pages
CS 372 Lab 2
Course: CS 372, Spring 2012School: Oregon State
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Word Count: 536
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1 4/30/12 CS Page 372 Lab 2 Byron Carasco Section 1 Answers No. Time Source Destination Protocol Length Info 58 26.692754 192.168.0.104 128.119.245.12 597 GET /wireshark-labs/HTTP-wireshark-file1.html HTTP/1.1 HTTP Hypertext Transfer Protocol GET /wireshark-labs/HTTP-wireshark-file1.html HTTP/1.1 Host: gaia.cs.umass.edu Connection: keep-alive User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) Accept:...
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1
4/30/12
CS Page 372 Lab 2
Byron Carasco
Section 1 Answers
No.
Time
Source
Destination
Protocol Length Info
58 26.692754
192.168.0.104
128.119.245.12
597
GET /wireshark-labs/HTTP-wireshark-file1.html HTTP/1.1
HTTP
Hypertext Transfer Protocol
GET /wireshark-labs/HTTP-wireshark-file1.html HTTP/1.1
Host: gaia.cs.umass.edu
Connection: keep-alive
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0)
Accept: text/html,application/xhtml+xml,application/xml
Referer: http://web.engr.oregonstate.edu/~hamdaoui/teachinf
Accept-Language: en-US,en;q=0.8
No.
Time
Source
Protocol Length Info
60 26.789083
128.119.245.12
494
HTTP/1.1 200 OK (text/html)
Destination
192.168.0.104
HTTP
Hypertext Transfer Protocol
HTTP/1.1 200 OK
Date: Wed, 01 Feb 2012 21:54:27 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Wed, 01 Feb 2012 21:54:02 GMT
ETag: "8734d-80-1e1a9280"
Accept-Ranges: bytes
Content-Length: 128
Keep-Alive: timeout=10, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8
Line-based text data: text/html
<html>
Congratulations. You've downloaded the file
http://gaia.cs.umass.edu/ethereal-labs/HTTP-ethereal-file1.html!
</html>
1. Both the browser and server are running HTTP 1.1
2. US English
3. Local: 192.168.0.104
Local: 128.119.245.12
Page 2
4.
5.
6.
7.
4/30/12
200 OK
Wed, 01 Feb 2012 21:54:02 GMT
128 Bytes
No
Section 2 Answers
493
21 8.709242
192.168.0.104
128.119.245.12
GET /wireshark-labs/HTTP-wireshark-file2.html HTTP/1.1
HTTP
Hypertext Transfer Protocol
GET /wireshark-labs/HTTP-wireshark-file2.html HTTP/1.1
Host: gaia.cs.umass.edu
Connection: keep-alive
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0)
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
23 8.807738
128.119.245.12
738
HTTP/1.1 200 OK (text/html)
192.168.0.104
HTTP
Hypertext Transfer Protocol
HTTP/1.1 200 OK
Date: Wed, 01 Feb 2012 22:38:42 GMT
Server: Apache/2.2.3 (CentOS)
Last-Modified: Wed, 01 Feb 2012 22:38:01 GMT
ETag: "d6c96-173-bb668440"
Accept-Ranges: bytes
Content-Length: 371
Keep-Alive: timeout=10, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8
Line-based text data: text/html
<html>
Congratulations again! Now you've downloaded the file lab22.html. <br>
This file's last modification date will not change. <p>
Thus you if download this multiple times on your browser, a
complete
copy <br> will only be sent once by the server due to the
inclusion of
the IN-MODIFIED-SINCE<br>
field in your browser's HTTP GET request to the server.
</html>
62 27.136578
192.168.0.104
128.119.245.12
HTTP
606
GET /wireshark-labs/HTTP-wireshark-file2.html HTTP/1.1
Page 3
4/30/12
Frame 62: 606 bytes on wire (4848 bits), 606 bytes captured (4848
bits)
Ethernet II, Src: Apple_55:c2:59 (00:23:12:55:c2:59), Dst:
CameoCom_e6:ad:d7 (00:18:e7:e6:ad:d7)
Internet Protocol Version 4, Src: 192.168.0.104 (192.168.0.104), Dst:
128.119.245.12 (128.119.245.12)
Transmission Control Protocol, Src Port: 53910 (53910), Dst Port: http
(80), Seq: 1, Ack: 1, Len: 540
Hypertext Transfer Protocol
GET /wireshark-labs/HTTP-wireshark-file2.html HTTP/1.1
Host: gaia.cs.umass.edu
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0)
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
If-None-Match: "d6c96-173-bb668440"
If-Modified-Since: Wed, 01 Feb 2012 22:38:01 GMT
64 27.236553
128.119.245.12
248
HTTP/1.1 304 Not Modified
192.168.0.104
HTTP
Frame 64: 248 bytes on wire (1984 bits), 248 bytes captured (1984
bits)
Ethernet II, Src: CameoCom_e6:ad:d7 (00:18:e7:e6:ad:d7), Dst:
Apple_55:c2:59 (00:23:12:55:c2:59)
Internet Protocol Version 4, Src: 128.119.245.12 (128.119.245.12),
Dst: 192.168.0.104 (192.168.0.104)
Transmission Control Protocol, Src Port: http (80), Dst Port: 53910
(53910), Seq: 1, Ack: 541, Len: 182
Hypertext Transfer Protocol
HTTP/1.1 304 Not Modified
Date: Wed, 01 Feb 2012 22:39:01 GMT
Server: Apache/2.2.3 (CentOS)
Connection: Keep-Alive
Keep-Alive: timeout=10, max=100
ETag: "d6c96-173-bb668440"
8. No
9. Yes, in the Line-based text data field
10. Yes: Wed, 01 Feb 2012 22:38:01 GMT
11. HTTP/1.1 304 Not Modified. The file was not returned.
Section 3 Answers
12. There was 1 GET message sent
Page 4
13. There were 4 TCP segments
14. HTTP/1.1 200 OK
15. No
Section 4 Answers
16. There were 3
a. 128.119.245.12
b. 165.193.140.14
c. 128.119.240.90
17. They were downloaded serially over 2 different TCP ports.
Section 5 Answers
18. HTTP/1.1 401 Authorization Required
19. Authorization: Basic d2lyZXNoYXJrLXN0dWRlbnRzOm5ldHdvcms=
4/30/12
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