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ITM 301 - Install and Use Zenmap - Sean Mcquillan 

Quick Scan (Local Host Screenshot)

Ipv4 Scan

  1. How many IP Addresses were Scanned? How many Hosts are up?

    1. There were 18 different IP’s scanned.

    2. There are 8 different hosts up, 5 are open (Domain, http, https, http-proxy, and unknown) and 3 are filtered (ssh, telnet, and rpcbind)

 

B. Compared with the information you saw earlier about your own computer, what

different information is revealed about the other hosts?

    • One of the biggest differences is the amount of hosts that are open. On my network there are a bunch of different hosts with a variety of ports open, closed or filtered. Whereas on my local computer, there is only one host, and one port, which is open

C. Find a host with open ports reported and list the ports and their services in your answer. What other information is provided about that host? 

    • On the host; 10.0.0.9, 100 ports were scanned, 5 are open and 95 are filtered

    • The list of ports only shows the 5 open ones

        • Port 80: http

        • Port 135: msrpc

        • Port 139: netbios-ssn

        • Port 445: microsoft-ds

        • Port 5357: wsdapi

    • The host 10.0.0.9 has a latency of 0.013s

    • These two screenshots provide all the information given to me about the port

Use nslookup to Convert Names and IP Addresses

  1. Try the nslookup command in reverse lookup mode: Try some addresses which are only different in the fourth (rightmost) number for an address that you know works. Can you find another legal host.

    1. 141.117.126.12 = sts.ryerson.ca

    2. 141.117.126.15 = fortify.itsec.ryerson.ca

    3. 141.117.126.92 = content.admin.ryerson.ca

    4. 141.117.126.97 = choose.ryerson.ca

  2. Try some other hosts

    1. nebeek.com. = 195.201.23.250

    2. mit.edu = 23.222.139.7

    3. juniper.com = 192.107.16.40

    4. cisco.com = 72.163.4.185

    5. toronto.edu = 128.100.166.120

    6. uToronto.ca = 128.100.166.120

    7. cs.utoronto.ca = 128.100.3.40

    8. ece.utoronto.ca = 128.100.13.50

    9. The university of Toronto should look something like this: (128.100. etc) because the ip’s for everything in Toronto starts with 128.100

  1. Write an essay (no more than 300 words) about the TLDs and their management

Today, more and more shoppers are looking online to purchase there products and if your store isn’t online, you are loosing customers by the day.  Domains are the start to your companies online presence.  Top level domains (TLD’s) give the customer an understanding of where your company is located, and what type of business your company is.

Top level domains can represent several different pieces of information about a business.  The TLD’s are split into categories.  Some may just have a generic purpose and some might represent where a business is located or who a business is sponsored by.  Shopping online in Canada has always been more challenging than shopping online in the United Sates.  Prices are lower, most companies ship there, and shipping costs are much cheaper.  Thats because most business are based in the United States.  Many shoppers struggle with finding a businesses Canadian website such as nike or Adidas.  It could also be misleading.  When looking at the product on the American website, the price seems cheaper then the Canadian one, when in reality its actually more.  Many customers struggle knowing whether the site is in Canadian dollars or American even though the answer is looking right at them.  One of the best indicators for what currency a companies products are, is the TLD.

Furthermore, TLD’s can provide more information than just its location.  TLD’s can show a website’s purpose such as; “.biz” (business), “.pro” (online program) or “.edu” (education/school).  Top level domain’s can also show who is managing or maintaining the website.  The best example for this is a country’s government website.  Most government websites end with the “.gov” domain, clearly indicating it is a government managed website.  This is done to keep webpages organized and secure.  The “.gov” TLD provides a lot more security behind it, to keep important information private and safe.

There are more than 1500 top level domains available for purchase today all with the purpose of classifying website.  Each TLD serves its own purpose and represents its webpages crucial information.  TLD’s are more than just two or three letters in a URL, they the most important aspect of a business’ website.

References

Crabb, K. (2019, September 12). What is a Top-Level Domain?: Domain.com: Blog. Retrieved September 28, 2020, from https://www.domain.com/blog/2018/12/18/what-is-a-top-level-domain/

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