CT320: Nmap                

Nmap Lab                

The purpose of this assignment is to learn how to use nmap, the network mapping tool.                 

Documentation                

• Manual page: nmap
• https://nmap.org

Part 1: Local use                

From the CSB 315 lab:

• nmap 192.168.110.*
• nmap 192.168.110.100-120
• nmap 192.168.110.0/24

Part 2: OS                 

What’s the difference between these two commands?

• nmap 192.168.110.1
• sudo nmap -O 192.168.110.1

Saying “The second command uses sudo and -O” is not good enough. Why!?                 

Part 3: Printer                

These ports are accessible on the printer fiddle.cs.colostate.edu:                 

        21/tcp   open  ftp
        23/tcp   open  telnet
        80/tcp   open  http
        443/tcp  open  https
        515/tcp  open  printer
        631/tcp  open  ipp
        7627/tcp open  soap-http
        9100/tcp open  jetdirect

• Do an nmap scan on fiddle.cs.colostate.edu. Did you get all of the ports mentioned above? Why not?
• Find a way to get a listing of all of the accessible ports.

Part 4: Look for servers                

Look for a computer in the 129.82.45.0 – 129.82.45.255 range that has port 4444 open. There should be only one.                 

• What command did you use?
• What is the computer’s IP address?
• What is its name?

Part 5: DNS server                

Look for a computer in the entire 23-bit CS subnet that has the “domain” port open. There should be only one.                 

• What command did you use?
• What is the computer’s IP address?
• What is its name?

Part 6: Credit                

Show your work to the TA.