nmap
TLDR
Scan single host
$ nmap [192.168.1.1]
Scan network range$ nmap [192.168.1.0/24]
Scan specific ports$ nmap -p [22,80,443] [host]
Service/version detection$ nmap -sV [host]
OS detection$ nmap -O [host]
Aggressive scan$ nmap -A [host]
Stealth SYN scan$ nmap -sS [host]
UDP scan$ nmap -sU [host]
Save output$ nmap -oN [output.txt] [host]
SYNOPSIS
nmap [options] targets
DESCRIPTION
nmap is the Network Mapper. It discovers hosts and services on networks.
The tool performs port scanning. Essential for network security assessment.
nmap is network scanner.
PARAMETERS
TARGETS
Hosts/networks to scan.-p PORTS
Ports to scan.-sV
Service version detection.-O
OS detection.-A
Aggressive scan.-sS
TCP SYN scan.-sU
UDP scan.-oN FILE
Normal output file.--help
Display help information.
CAVEATS
Authorized use only. Some scans need root. May trigger IDS alerts.
HISTORY
Nmap was created by Gordon Lyon (Fyodor) in 1997 and is the premier network scanning tool.
