Which of the following Nmap switches will complete this task?

3 thoughts on “Which of the following Nmap switches will complete this task?”

1. I am seeing answer A on some dumps being displayed as -p- Which has the same exact output as answer C, -p 1-65534.

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2. I’m seeing answer A written differently.

   Some sites show the answer as -p- and that is the same as using -p 1-65534.

   Here is the output for nmap -p-

   root@kali:~# nmap 10.0.2.11 -p-
   Starting Nmap 7.91 ( https://nmap.org ) at 2020-12-06 01:15 EST
   Nmap scan report for 10.0.2.11
   Host is up (0.00036s latency).
   Not shown: 65506 closed ports
   PORT STATE SERVICE
   21/tcp open ftp
   22/tcp open ssh
   23/tcp open telnet
   25/tcp open smtp
   53/tcp open domain
   80/tcp open http
   111/tcp open rpcbind
   139/tcp open netbios-ssn
   445/tcp open microsoft-ds
   512/tcp open exec
   513/tcp open login
   514/tcp open shell
   1099/tcp open rmiregistry
   1524/tcp open ingreslock
   2049/tcp open nfs
   2121/tcp open ccproxy-ftp
   3306/tcp open mysql
   3632/tcp open distccd
   5432/tcp open postgresql
   5900/tcp open vnc
   6000/tcp open X11
   6667/tcp open irc
   6697/tcp open ircs-u
   8180/tcp open unknown
   8787/tcp open msgsrvr
   43647/tcp open unknown
   52580/tcp open unknown
   58097/tcp open unknown
   59979/tcp open unknown
   MAC Address: 08:00:27:F6:69:30 (Oracle VirtualBox virtual NIC)

   Nmap done: 1 IP address (1 host up) scanned in 4.30 seconds
   root@kali:~#

   And here is the output using -p 1-65534

   root@kali:~# nmap 10.0.2.11 -p 1-65534
   Starting Nmap 7.91 ( https://nmap.org ) at 2020-12-06 01:17 EST
   Nmap scan report for 10.0.2.11
   Host is up (0.00031s latency).
   Not shown: 65505 closed ports
   PORT STATE SERVICE
   21/tcp open ftp
   22/tcp open ssh
   23/tcp open telnet
   25/tcp open smtp
   53/tcp open domain
   80/tcp open http
   111/tcp open rpcbind
   139/tcp open netbios-ssn
   445/tcp open microsoft-ds
   512/tcp open exec
   513/tcp open login
   514/tcp open shell
   1099/tcp open rmiregistry
   1524/tcp open ingreslock
   2049/tcp open nfs
   2121/tcp open ccproxy-ftp
   3306/tcp open mysql
   3632/tcp open distccd
   5432/tcp open postgresql
   5900/tcp open vnc
   6000/tcp open X11
   6667/tcp open irc
   6697/tcp open ircs-u
   8180/tcp open unknown
   8787/tcp open msgsrvr
   43647/tcp open unknown
   52580/tcp open unknown
   58097/tcp open unknown
   59979/tcp open unknown
   MAC Address: 08:00:27:F6:69:30 (Oracle VirtualBox virtual NIC)

   Nmap done: 1 IP address (1 host up) scanned in 3.06 seconds
   root@kali:~#

   Exactly the same.

   The correct answer in a situation like this would be to choose the answer that requires the least amount of effort.

   3

   1

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   1. Output is not the same on the above.

      nmap -p- results in : Not shown: 65506 closed ports

      nmap -p 1-65534 results in : Not shown: 65505 closed ports

      Hence the second nmap choice is missing the last port which is 65535.

      Correct answer is A.

      nmap -p-

      Reply