Nmap Cheat Sheet header

All the tables provided in the cheat sheets are also presented in tables below which are easy to copy and paste.

The Nmap cheat sheet covers:

  • Different usage options of Nmap
  • Scanning command syntax
  • Port Specification options
  • Host /172.16.1.1 discovery
  • Scanning types
  • Version detection
  • 172.16.1.1 specification
  • Use of NMAP scripts NSE
  • Firewall proofing
  • NMAP output formats
  • Scan options
  • NMAP Timing options
  • Miscellaneous commands

View or Download the Cheat Sheet JPG image

Right-click on the image below to save the JPG file (1945 width x 2470 height in pixels), or click here to open it in a new browser tab. Once the image opens in a new window, you may need to click on the image to zoom in and view the full-sized jpeg.

Nmap Cheat Sheet

View or Download the cheat sheet PDF file

You can download the cheat sheet PDF file here. If it opens in a new browser tab, simply right click on the PDF and navigate to the download selection.

What’s included in the Cheat Sheet

The following categories and items have been included in the cheat sheet:

Different usage options of Nmap

Different usage options
Port discovery and specification
Host discovery and specification
Vulnerability scanning
Application and service version detection
Software version detection against the ports
Firewall / IDS Spoofing

Scanning command syntax

Scanning Command Syntax


nmap [scan types] [options] {172.16.1.1 specification}


Port Specification options

Port Specification Options


Syntax


Example


Description


-P


nmap –p 23 172.16.1.1


Port scanning port specific port


-P


nmap –p 23-100 172.16.1.1


Port scanning port specific port range


-p


nmap -pU:110,T:23-25,443 172.16.1.1


U-UDP,T-TCP different port types scan


-p-


nmap -p- 172.16.1.1


Port scan for all ports


-p


nmap -smtp,https 172.16.1.1


Port scan from specified protocols


-F


nmap –F 172.16.1.1


Fast port scan for speed up


-P "*"


namp -p "*" ftp 172.16.1.1


Port scan using name


-r


nmap -r 172.16.1.1


Sequential port scan


Host /172.16.1.1 discovery

Host /172.16.1.1 Discovery


Switch/Syntax


Example


Description


-sL


nmap 172.16.1.1-5 -sL


List 172.16.1.1 without scanning


-sn


nmap 172.16.1.1/8 -sn


Disable port scanning


-Pn


nmap 172.16.1.1-8 -Pn


Port scans only and no host discovery


-PS


nmap 172.16.1.185 -PS22-25,80


TCP SYN discovery on specified port


-PA


nmap 172.16.1.185 -PA22-25,80


TCP ACK discovery on specified port


-PU


nmap 172.16.1.1-8 -PU53


UDP discovery on specified port


-PR


nmap 172.16.1.1-1/8 -PR


ARP discovery within local network


-n


nmap 172.16.1.1 -n


no DNS resolution


Scanning types

Scanning Types


Switch/Syntax


Example


Description


-sS


nmap 172.16.1.1 -sS


TCP SYN port scan


-sT


nmap 172.16.1.1 -sT


TCP connect port scan


-sA


nmap 172.16.1.1 -sA


TCP ACK port scan


-sU


nmap 172.16.1.1 -sU


UDP port scan


-Sf


nmap -Sf 172.16.1.1


TCP FIN scan


-sX


nmap -SX 172.16.1.1


XMAS scan


-Sp


nmap -Sp 172.16.1.1


Ping scan


-sU


nmap -Su 172.16.1.1


UDP scan


-sA


nmap -Sa 172.16.1.1


TCP ACK scan


-SL


nmap -Sl 172.16.1.1


list scan


Version detection

Version Detection


Switch/Syntax


Example


Description


-sV


nmap 172.16.1.1 -sV


Try to find the version of the service running on port


-sV --version-intensity


nmap 172.16.1.1 -sV --version-intensity 6


Intensity level range 0 to 9.


-sV --version-all


nmap 172.16.1.1 -sV --version-all


Set intensity level to 9


-sV --version-light


nmap 172.16.1.1 -sV --version-light


Enable light mode


-A


nmap 172.16.1.1 -A


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


-O


nmap 172.16.1.1 -O


Remote OS detection


172.16.1.1 specification

172.16.1.1 Specification


nmap 172.16.1.1


single IP scan


nmap 172.16.1.1 172.16.100.1


scan specific IPs


nmap 172.16.1.1-254


scan a range of IPs


nmap xyz.org


scan a domain


nmap 10.1.1.0/8


scan using CIDR notation


nmap -iL scan.txt


scan 172.16.1.1s from a file


nmap --exclude 172.16.1.1


specified IP s exclude from scan


Use of NMAP scripts NSE

Use of Nmap Scripts NSE


nmap --script= test script 172.16.1.0/24


execute thee listed script against target IP address


nmap --script-update-db


adding new scripts


nmap -sV -sC


use of safe default scripts for scan


nmap --script-help="Test Script"


get help for script


Firewall proofing

Firewall Proofing


nmap -f [172.16.1.1]


scan fragment packets


nmap –mtu [MTU] [172.16.1.1]


specify MTU


nmap -sI [zombie] [172.16.1.1]


scan idle zoombie


nmap –source-port [port] [172.16.1.1]


manual source port - specify


nmap –data-length [size] [172.16.1.1]


randomly append data


nmap –randomize-hosts [172.16.1.1]


172.16.1.1 scan order randomization


nmap –badsum [172.16.1.1]


bad checksum


NMAP output formats

Nmap output Formats


Default/normal output


nmap -oN scan.txt 172.16.1.1


XML


nmap -oX scanr.xml 172.16.1.1


Grepable format


snmap -oG grep.txt 172.16.1.1


All formats


nmap -oA 172.16.1.1


Scan options

Scan Options


Syntax


Description


nmap -sP 172.16.1.1


Ping scan only


nmap -PU 172.16.1.1


UDP ping scan


nmap -PE 172.16.1.1


ICMP echo ping


nmap -PO 172.16.1.1


IP protocol ping


nmap -PR 172.16.1.1


ARP ping


nmap -Pn 172.16.1.1


Scan without pinging


nmap –traceroute 172.16.1.1


Traceroute


NMAP Timing options

Nmap Timing Options


Syntax


Description


nmap -T0 172.16.1.1


Slowest scan


nmap -T1 172.16.1.1


Tricky scan to avoid IDS


nmap -T2 172.16.1.1


Timely scan


nmap -T3 172.16.1.1


Default scan timer


nmap -T4 172.16.1.1


Aggressive scan


nmap -T5 172.16.1.1


Very aggressive scan


Miscellaneous commands

Miscellaneous Commands


nmap -6


scan IPV6 targets


nmap –proxies proxy 1 URL, proxy 2 URL


Run in targets with proxies


nmap –open


Show open ports only


Nmap + Nessus Cheat Sheet

If you also use Nessus with Nmap, download this cheat sheet instead as it has all the tables included in the Nmap cheat sheet plus three extra Nessus tables. Click on the image below to open the JPG in a new window where you can save it. Alternatively you can download the PDF file here.

Nmap + Nessus Cheat Sheet

Nessus install and use

Nessus Installation and Usage


Installation


# apt-get install nessus


Add administrator for the application


# nessus-adduser


Update components


# nessus-update-plugins


Start nessus


# /etc/init.d/nessusd start


Check nessus port


# netstat -luntp or # netstat –landtp


Nessuscli

Nessuscli


nessus –h


Display help


nessus –q


Run in batch mode


nessus --list-policies


List policies included in .nessus configuration file


nessus --list-reports


List report names included in .nessus configuration file


nessus –p


List available plugins in the server


nessus --policy-name (policy name)


Specify policy to use when a scan initiate in command line


nessus -T (format)


Specify output report format (html, text, nbe, nessus)


nessus --target-file (file name)


Use scan targets specified in the file instead of default .nessus file


nessus –x


Do not check for SSL certificates


Nessus server commands

Nessus Server Commands


nessus-service -a ( ip address )


Listens to specified IP address only


nessus-service -c (Config file name )


Set to use server side configuration file instead of default configuration file


nessus-service -D


Set server mode to background run


nessus-service -h


List summary of nessus commands


nessus-service --ipv4-only


Listen to IPV4 only


nessus-service --ipv6-only


Listen to IPV6 only


nessus-service -K


Configure master password for nessus scanner


nessus-service -p


Set server to listen to client specified port rather than default port 1241


nessus-service -q


Run in quiet mode