nmap Switches

Question 1

nmap-sS

Answer 1

TCP SYN - half-open scan, requests connection without acknowledging

Question 2

nmap -sT

Answer 2

TCP Connect - Half-open scan, requires privileged access

Question 3

nmap -sU

Answer 3

UDP Scan - Scans UDP ports, takes time as must wait for response or timeout

Question 4

nmap -p

Answer 4

Port Range - Specify port range

Can use “–top-portsn” where “n” is the number of commonly used ports

Question 5

nmap -sV or -A

Answer 5

Probe more intensely to find software and versions

Question 6

nmap -Pn

Answer 6

Scan without host discovery