Nmap CheatSheet

NMAP Commands Cheatsheet

The following section explains the usage of category-wise NMAP diverse commands with examples as following -

Basic Scanning Commands

Goal	Command	Example
Scan a Single Target	nmap [target]	nmap 192.168.0.1
Scan Multiple Targets	nmap [target1, target2, etc	nmap 192.168.0.1 192.168.0.2
Scan a Range of Hosts	nmap [range of ip addresses]	nmap 192.168.0.1-10
Scan an Entire Subnet	nmap [ip address/cdir]	nmap 192.168.0.1/24
Scan Random Hosts	nmap -iR [number]	nmap -iR 0
Excluding Targets from a Scan	nmap [targets] – exclude [targets]	nmap 192.168.0.1/24 –exclude 192.168.0.100, 192.168.0.200
Excluding Targets Using a List	nmap [targets] – excludefile [list.txt]	nmap 192.168.0.1/24 –excludefile notargets.txt
Perform an Aggressive Scan	nmap -A [target]	nmap -A 192.168.0.1
Scan an IPv6 Target	nmap -6 [target]	nmap -6 1aff:3c21:47b1:0000:0000:0000:0000:2afe

Discovery Options

Goal	Command	Example
Perform a Ping Only Scan	nmap -sP [target]	nmap -sP 192.168.0.1
Don’t Ping	nmap -PN [target]	nmap -PN 192.168.0.1
TCP SYN Ping	nmap -PS [target]	nmap -PS 192.168.0.1
TCP ACK Ping	nmap -PA [target]	nmap -PA 192.168.0.1
UDP Ping	nmap -PU [target]	nmap -PU 192.168.0.1
SCTP INIT Ping	nmap -PY [target]	nmap -PY 192.168.0.1
ICMP Echo Ping	nmap -PE [target]	nmap -PE 192.168.0.1
ICMP Timestamp	Ping	nmap -PP [target]
CMP Address Mask	Ping nmap -PM [target]	nmap -PM 192.168.0.1
IP Protocol Ping	nmap -PO [target]	nmap -PO 192.168.0.1
ARP Ping	nmap -PR [target]	nmap -PR 192.168.0.1
Traceroute	nmap –traceroute [target]	nmap –traceroute 192.168.0.1
Force Reverse DNS Resolution	nmap -R [target]	nmap -R 192.168.0.1
Disable Reverse DNS Resolution	nmap -n [target]	nmap -n 192.168.0.1
Alternative DNS Lookup	nmap –system-dns [target]	nmap –system-dns 192.168.0.1
Manually Specify DNS Server(s)	nmap –dns-servers [servers] [target]	nmap –dns-servers 201.56.212.54 192.168.0.1
Create a Host List	nmap -sL [targets]	nmap -sL 192.168.0.1/24

Advanced Scanning Options

Goal	Command	Example
TCP SYN Scan	nmap -sS [target]	nmap -sS 192.168.0.1
TCP Connect Scan	nmap -sT [target]	nmap -sT 192.168.0.1
UDP Scan	nmap -sU [target]	nmap -sU 192.168.0.1
TCP NULL Scan	nmap -sN [target]	nmap -sN 192.168.0.1
TCP FIN Scan	nmap -sF [target]	nmap -sF 192.168.0.1
Xmas Scan	nmap -sX [target]	nmap -sX 192.168.0.1
TCP ACK Scan	nmap -sA [target]	nmap -sA 192.168.0.1
Custom TCP Scan	nmap –scanflags [flags] [target]	nmap –scanflags SYNFIN 192.168.0.1
IP Protocol Scan	nmap -sO [target]	nmap -sO 192.168.0.1
Send Raw Ethernet Packets	nmap –send-eth [target]	nmap –send-eth 192.168.0.1
Send IP Packets	nmap –send-ip [target]	nmap –send-ip 192.168.0.1

Port Scanning Options

Goal	Command	Example
Perform a Fast Scan	nmap -F [target]	nmap -F 192.168.0.1
Scan Specific Ports	nmap -p [port(s)] [target]	nmap -p 21-25,80,139,8080 192.168.1.1
Scan Ports by Name	nmap -p [port name(s)] [target]	nmap -p ftp,http* 192.168.0.1
Scan Ports by Protocol	nmap -sU -sT -p U: [ports],T:[ports] [target]	nmap -sU -sT -p U:53,111,137,T:21- 25,80,139,8080 192.168.0.1
Scan All Ports	nmap -p ‘*’ [target]	nmap -p ‘*’ 192.168.0.1
Scan Top Ports	nmap –top-ports [number] [target]	nmap –top-ports 10 192.168.0.1
Perform a Sequential Port Scan	nmap -r [target]	nmap -r 192.168.0.1

Version Detection

Goal	Command	Example
Operating System Detection	nmap -O [target]	nmap -O 192.168.0.1
Attempt to Guess an Unknown OS	nmap -O –osscan guess [target]	nmap -O –osscan-guess 192.168.0.1
Service Version Detection	nmap -sV [target]	nmap -sV 192.168.0.1
Troubleshooting Version Scans	nmap -sV –version trace [target]	nmap -sV –version-trace 192.168.0.1
Perform a RPC Scan	nmap -sR [target]	nmap -sR 192.168.0.1

Firewall Evasion Techniques

Goal	Command	Example
augment Packets	nmap -f [target]	nmap -f 192.168.0.1
pacify a Specific MTU	nmap –mtu [MTU] [target]	nmap –mtu 32 192.168.0.1
Use a Decoy	nmap -D RND:[number] [target]	nmap -D RND:10 192.168.0.1
le Zombie Scan	nmap -sI [zombie] [target]	nmap -sI 192.168.0.38
Manually Specify a Source Port	nmap –source-port [port] [target]	nmap –source-port 10 192.168.0.1
Append Random Data	nmap –data-length [size] [target]	nmap –data-length 2 192.168.0.1
Randomize Target Scan Order	nmap –randomize-hosts [target]	nmap –randomize-ho 192.168.0.1-20
Spoof MAC Address	nmap –spoof-mac [MAC	0
Send Bad Checksums	nmap –badsum [target]	nmap –badsum 192.168.0.1

Troubleshooting And Debugging

Goal	Command	Example
Getting Help	nmap -h	nmap -h
Display Nmap Version	nmap -V	nmap -V
Verbose Output	nmap -v [target]	nmap -v 192.168.0.1
Debugging	nmap -d [target]	nmap -d 192.168.0.1
Display Port State Reason	nmap –reason [target]	nmap –reason 192.168.0.1
Only Display Open Ports	nmap –open [target]	nmap –open 192.168.0.1
Trace Packets	nmap –packet-trace [target]	nmap –packet-trace 192.168.0.1
Display Host Networking	nmap –iflist	nmap –iflist
Specify a Network Interface	nmap -e [interface] [target]	nmap -e eth0 192.168.0.1

NMAP Scripting Engine

Goal	Command	Example
Execute Individual Scripts	nmap –script [script.nse] [target]	nmap –script banner.nse 192.168.0.1
Execute Multiple Scripts	nmap –script [expression] [target]	nmap –script ‘http-*’ 192.168.0.1
Script Categories all, auth, default, discovery, external, intrusive, malware, safe, vuln
Execute Scripts by Category	nmap –script [category] [target]	nmap –script ‘not intrusive’ 192.168.0.1
Execute Multiple Script Categories	nmap –script [category1,category2,etc]	nmap –script ‘default or safe’ 192.168.0.1
Troubleshoot Scripts	nmap –script [script] –script trace [target]	nmap –script banner.nse –script-trace 192.168.0.1
Update the Script Database	nmap –script-updatedb	nmap –script-updatedb