Port scanning with Nmap in Cybersecurity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to scan all ports on a target IP using Nmap.

Cybersecurity

nmap -p [1] 192.168.1.1

Drag options to blanks, or click blank then click option'

A80

B443

C22

D1-65535

Attempts:

3 left

💡 Hint

Common Mistakes

Using a single port number instead of a range.

Omitting the port option entirely.

The option -p 1-65535 tells Nmap to scan all ports from 1 to 65535 on the target IP.

2fill in blank

medium

Complete the command to perform a TCP SYN scan on a target IP.

Cybersecurity

nmap [1] 192.168.1.1

Drag options to blanks, or click blank then click option'

A-sS

B-sT

C-sV

D-sU

Attempts:

3 left

💡 Hint

Common Mistakes

Using -sU which is for UDP scans.

Using -sT which is a full TCP connect scan.

The -sS option performs a TCP SYN scan, which is a fast and stealthy scan type.

3fill in blank

hard

Fix the error in the command to scan ports 20 to 25 on a target IP.

Cybersecurity

nmap -p [1] 192.168.1.1

Drag options to blanks, or click blank then click option'

A20,25

B20-25

C20:25

D20_25

Attempts:

3 left

💡 Hint

Common Mistakes

Using a colon or underscore instead of a hyphen.

Using commas which specify separate ports, not a range.

The correct syntax for specifying a port range in Nmap is 20-25 using a hyphen.

4fill in blank

hard

Fill both blanks to scan a target IP with service version detection and OS detection.

Cybersecurity

nmap [1] [2] 192.168.1.1

Drag options to blanks, or click blank then click option'

A-sV

B-O

C-sS

D-p

Attempts:

3 left

💡 Hint

Common Mistakes

Using port scan options instead of detection options.

Mixing up the order of options.

-sV enables service version detection, and -O enables OS detection in Nmap scans.

5fill in blank

hard

Fill all three blanks to create a command that scans ports 80 and 443, performs a TCP connect scan, and outputs results in normal format.

Cybersecurity

nmap [1] -p [2] [3] 192.168.1.1

Drag options to blanks, or click blank then click option'

A-sT

B80,443

C-oN -

D-sS

Attempts:

3 left

💡 Hint

Common Mistakes

Using -sS instead of -sT for TCP connect scan.

Listing ports with a hyphen instead of commas.

Omitting the output format option.

-sT performs a TCP connect scan, -p 80,443 scans ports 80 and 443, and -oN outputs results in normal format.