Nmap Cheat Sheet

Nmap Target Selection

Scan a single IP nmap 192.168.10.1
Scan a host nmap www.testhost.com
Scan a range of IPs nmap 192.168.10.1-20
Scan a subnet nmap 192.168.10.0/24
Scan targets from a text file nmap -iL list-of-ips.txt

Nmap Port Selection

Scan a single Port nmap -p 22 192.168.10.1
Scan a range of ports nmap -p 1-100 192.168.10.1
Scan 100 most common ports (Fast) nmap -F 192.168.10.1
Scan all 65535 ports nmap -p- 192.168.10.1

Nmap Port Scan types

Scan using TCP connect nmap -sT 192.168.10.1
Scan using TCP SYN scan (default) nmap -sS 192.168.10.1
Scan UDP ports nmap -sU -p 123,161,162 192.168.10.1
Scan selected ports – ignore discovery nmap -Pn -F 192.168.10.1

Service and OS Detection

Detect OS and Services nmap -A 192.168.10.1
Standard service detection nmap -sV 192.168.10.1
More aggressive Service Detection nmap -sV –version-intensity 5 192.168.10.1
Lighter banner grabbing detection nmap -sV –version-intensity 0 192.168.10.1

Nmap Output Formats

Save default output to file nmap -oN outputfile.txt 192.168.10.1
Save results as XML nmap -oX outputfile.xml 192.168.10.1
Save results in a format for grep nmap -oG outputfile.txt 192.168.10.1
Save in all formats nmap -oA outputfile 192.168.10.1

Digging deeper with NSE Scripts

Scan using default safe scripts nmap -sV -sC 192.168.10.1
Get help for a script nmap –script-help=ssl-heartbleed
Scan using a specific NSE script nmap -sV -p 443 –script=ssl-heartbleed.nse 192.168.10.1
Scan with a set of scripts nmap -sV –script=smb* 192.168.10.1

A scan to search for DDOS reflection UDP services

Scan for UDP DDOS reflectors nmap –sU –A –PN –n –pU:19,53,123,161
–script=ntp-monlist,dns-recursion,snmp-sysdescr 192.168.10.0/24

HTTP Service Information

Gather page titles from HTTP services nmap –script=http-title 192.168.10.0/24
Get HTTP headers of web services nmap –script=http-headers 192.168.10.0/24
Find web apps from known paths nmap –script=http-enum 192.168.10.0/24

Detect Heartbleed SSL Vulnerability

Heartbleed Testing nmap -sV -p 443 –script=ssl-heartbleed 192.168.10.0/24

IP Address information

Find Information about IP address nmap –script=asn-query,whois,ip-geolocation-maxmind 192.168.10.0/24

 

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