Let’s see what we can find by using some network tools. A [3 marks] Let ’s see w
ID: 3858902 • Letter: L
Question
Let’s see what we can find by using some network tools.
A [3 marks] Let ’s see what we can find using Who is . Go to https://ping.eu select WHOIS and enter walmart.ca (Walmart Canada). Be sure to click on the Full Info box and enter the captcha to access the details.What do you see (cut and paste the details into your answer) ? How could good guys and bad guys make use of this information?
b. [3 marks] Let’s see what Ping does. Go to https://ping.eu, select Ping and enter caltech.edu (California Institute of Technology). What do you see (cut and paste the details into your answer) ? How could good guys and bad guys make use of this information?
c. [3 marks] Now let’s see what trace route. Go to http://www.monitis.com/traceroute/ and enter the URL for the Switzerland Information website (in the Middle East) – www.about.ch This will give you the path from North America, Europe, and Asia to the Switzerland Information servers. Click the tabs for the three starting points and look at the maps. Be sure scroll down to see all the hops the message made in its journey (they are not all shown on the maps). Comment on what you see.Is there anything surprising inthe results?
d. [3 marks] Take the LAST IP address given for each of the three routes (you may have to let your cursor hover over the hops at the end of the list to see the IP address) and then go to http://whatismyipaddress.com/ where you enter the IP address in the grey box in the top right of the page. As you scroll down the page,you will find the geographical location (with a map). Which city does the path end in for each route and what was the IP address?
e.[3marks] Try traceroute a few time (over the period of a couple of hours)with the same destination. Is the same route taken each time?Why does the information follow these routes? What implications do the routes shown have with respect to privacy issues?
Explanation / Answer
a)
Registrar:
Registrant:
Administrative contact:
Mississauga ON L5N1P9 Canada
Technical contact:
Mississauga ON L5N1P9 Canada
Name servers:
eur2.akam.net
eur3.akam.net
use3.akam.net
use4.akam.net
eur6.akam.net
use9.akam.net
usc5.akam.net
ns1-137.akam.net
ns1-189.akam.net
ns9.wal-mart.com
ns10.wal-mart.com
ns8.wal-mart.com
bad guys could ping and try to hack into the communications made through the server.This could mean having access to walmart's customer or employee database.
b)
-- PING caltech.edu (131.215.239.141) 56(84) bytes of data. ---
64 bytes from 131.215.239.141: icmp_seq=1 ttl=54 time=154 ms
64 bytes from 131.215.239.141: icmp_seq=2 ttl=54 time=154 ms
64 bytes from 131.215.239.141: icmp_seq=3 ttl=54 time=153 ms
64 bytes from 131.215.239.141: icmp_seq=4 ttl=54 time=154 ms
--- caltech.edu ping statistics ---
--- Round Trip Time (rtt) ---
0.472 ms
bad guys know the exact ip address of the server of caltech(but this is proxy server address so it does'nt matter). They also come too know that ICMP protocol is being used.
c)
it shows us the addresses of all the intermediate nodes that the packets travvled through before reaching us (or the page request reaching the server of www.about.ch) also gives us the propogation time at each node.
Some of the nodes were not in responding stage and packets must have worked their way to and from us avoiding them.
The big prominent lines that we see on the map are actually the wires submerged under the ocean that is connecting continents.
E) traceroute does not always follow the same path, routing algorithms are dynamic and the paths are decided keeping network traffic in mind.
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