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Nmap (Network Mapping) Cheat Sheet. It is a very famous port scanner available for free. It is not just only a port scanner, it also do various jobs like banner grabbing, OS fingerprinting, Nmap script scanning, evading firewalls, etc. So we are gonna show you some important commands of Nmap.
Step 1: Open up the console and type nmap
It will give you the whole commands of Nmap. But we are here to understanding the commands so we should go ahead.
Here is the cheatsheet of NMAP.
Step 1: Open up the console and type nmap
It will give you the whole commands of Nmap. But we are here to understanding the commands so we should go ahead.
Here is the cheatsheet of NMAP.
BASIC SCANNING TECHNIQUES
| 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 List of Targets | nmap -iL [list.txt] | nmap -iL targets.txt |
| 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] | nmap -PP 192.168.0.1 |
| ICMP 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 |
| Submit TCP/IP Fingerprints | www.nmap.org/submit/ | |
| 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 |
TIMING OPTIONS
| Goal | Command | Example |
| Timing Templates | nmap -T[0-5] [target] | nmap -T3 192.168.0.1 |
| Set the Packet TTL | nmap --ttl [time] [target] | nmap --ttl 64 192.168.0.1 |
| Minimum # of Parallel Operations | nmap --min-parallelism [number] [target] | nmap --min-parallelism 10 192.168.0.1 |
| Maximum # of Parallel Operations | nmap --max-parallelism [number] [target] | nmap --max-parallelism 1 192.168.0.1 |
| Minimum Host Group Size | nmap --min-hostgroup [number] [targets] | nmap --min-hostgroup 50 192.168.0.1 |
| Maximum Host Group Size | nmap --max-hostgroup [number] [targets] | nmap --max-hostgroup 1 192.168.0.1 |
| Maximum RTT Timeout | nmap --initial-rtt-timeout [time] [target] | nmap --initial-rtt-timeout 100ms 192.168.0.1 |
| Initial RTT Timeout | nmap --max-rtt-timeout [TTL] [target] | nmap --max-rtt-timeout 100ms 192.168.0.1 |
| Maximum Retries | nmap --max-retries [number] [target] | nmap --max-retries 10 192.168.0.1 |
| Host Timeout | nmap --host-timeout [time] [target] | nmap --host-timeout 30m 192.168.0.1 |
| Minimum Scan Delay | nmap --scan-delay [time] [target] | nmap --scan-delay 1s 192.168.0.1 |
| Maximum Scan Delay | nmap --max-scan-delay [time] [target] | nmap --max-scan-delay 10s 192.168.0.1 |
| Minimum Packet Rate | nmap --min-rate [number] [target] | nmap --min-rate 50 192.168.0.1 |
| Maximum Packet Rate | nmap --max-rate [number] [target] | nmap --max-rate 100 192.168.0.1 |
| Defeat Reset Rate Limits | nmap --defeat-rst-ratelimit [target] | nmap --defeat-rst-ratelimit 192.168.0.1 |
FIREWALL EVASION TECHNIQUES
| Goal | Command | Example |
| Fragment Packets | nmap -f [target] | nmap -f 192.168.0.1 |
| Specify 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 |
| Idle Zombie Scan | nmap -sI [zombie] [target] | nmap -sI 192.168.0.38 192.168.0.1 |
| Manually Specify a Source Port | nmap --source-port [port] [target] | nmap --source-port 1025 192.168.0.1 |
| Append Random Data | nmap --data-length [size] [target] | nmap --data-length 20 192.168.0.1 |
| Randomize Target Scan Order | nmap --randomize-hosts [target] | nmap --randomize-hosts 192.168.0.1-20 |
| Spoof MAC Address | nmap --spoof-mac [MAC|0|vendor] [target] | nmap --spoof-mac Cisco 192.168.0.1 |
| Send Bad Checksums | nmap --badsum [target] | nmap --badsum 192.168.0.1 |
OUTPUT OPTIONS
| Goal | Command | Example |
| Save Output to a Text File | nmap -oN [scan.txt] [target] | nmap -oN scan.txt 192.168.0.1 |
| Save Output to a XML File | nmap -oX [scan.xml] [target] | nmap -oX scan.xml 192.168.0.1 |
| Grepable Output | nmap -oG [scan.txt] [targets] | nmap -oG scan.txt 192.168.0.1 |
| Output All Supported File Types | nmap -oA [path/filename] [target] | nmap -oA ./scan 192.168.0.1 |
| Periodically Display Statistics | nmap --stats-every [time] [target] | nmap --stats-every 10s 192.168.0.1 |
| 133t Output | nmap -oS [scan.txt] [target] | nmap -oS scan.txt 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 |
About the Author:
Kislay Bhardwaj, He is a security researcher and specialized in Penetrating Testing, Cyber forensic, Linux security and other Security Assessments and Training. -
See more at: http://blog.hackersonlineclub.com/
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