You want to scan all open ports on computer with IP address of the target in ord

Question

You want to scan all open ports on computer with IP address of the target in order to get information on hosted services along with the versions of the software used to provide the service. What nmag command you may type? Write down the command: You want to use nmap to scan a target computer, but you do not want to go further than determining if the target is online. Which of the following options would you use? -sO -oN -sP None of the above You want to use nmap to scan a target computer in order to determine what IP protocols it support. Which of the following options would you use? -sO -oN -sP None of the above Use nmap to scan the computer with the host name www.google.com to determine what protocols it supports. Based on the result, name two of the protocols it supports: ____________. __________. How many open ports use protocols you can't get information about because of filtering? Answer: ________ You want to perform a scan and get information about the operating system installed on the target computer. Which of the following option would you use? -OS -oS -O None of the above You want to use nmap to perform target scans. You want to spoof your computer's IP address in an attempt to avoid being blocked by firewalls and other devices in the defense system that protects the target. What option should you use? Answer: ___________.

Explanation / Answer

Assuming 192.168.1.1 is the target IP

1) command to scan all ports:
   nmap -p 1-65535 -sV -T4 192.168.1.1

   -p for port range, all ports (1-65535)
   -sV Probe open ports to determine service/version info
   -T4 timing for faster result, T5 can be used for aggressive scan, but it could lead to missed ports

2) -sP , It is tell me if the target machine responds, that way we can know if its online

3) -sO , It is used for IP protocol scan

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