Tools

nmap Cheat Sheet

Print-ready cheat sheet for nmap, organized for fast lookup, study, and desk-side use

Source
Nmap Documentation (nmap.org/docs)
License
MIT
Updated
2026-03-27

Sample

What's in this cheat sheet

  • Basic Scans
  • Port Scanning
  • Host Discovery
  • Service Detection
  • OS Detection
  • Scripts (NSE)
  • Output Formats
  • Timing & Performance
  • Firewall Evasion
  • Common Patterns

Scan Targets

nmap 192.168.1.1              # single host
nmap 192.168.1.0/24           # entire subnet
nmap 192.168.1.1-50           # IP range
nmap -iL targets.txt          # hosts from file

Target Specification

192.168.1.1Single IP address
192.168.1.0/24CIDR notation (256 hosts)
192.168.1.1-254IP range
example.comHostname (resolved to IP)
-iL file.txtRead targets from file
--exclude 192.168.1.1Exclude specific hosts
--excludefile skip.txtExclude hosts from file

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