OS Detection

Question 1

Remote OS detection using TCP/IP

stack fingerprinting

Answer 1

-O

nmap 192.168.1.1 -O

Question 2

If at least one open and one closed
TCP port are not found it will not try
OS detection against host

Answer 2

-O –osscan-limit

nmap 192.168.1.1 -O –osscan-limit

Question 3

Makes Nmap guess more aggressively

Answer 3

-O –osscan-guess

nmap 192.168.1.1 -O –osscan-guess

Question 4

Set the maximum number x of OS

detection tries against a target

Answer 4

-O –max-os-tries

nmap 192.168.1.1 -O –max-os-tries 1

Question 5

Enables OS detection, version detection, script scanning, and traceroute

Answer 5

-A

nmap 192.168.1.1 -A