Exploring Network Security with Nmap Commands: Ethical Hackers(Beginners) Must Know

I’ve already discussed the legion tool. It is a tool for scanning targets via a graphical user interface. View it now

Ping Scanning

The ping scanning gives information about every active IP on your Network. We can perform a ping scan by using the below command:

nmap -sn <target>

Port Scanning

sS TCP SYN scan

sT TCP connect scan

sU UDP scans

sY SCTP INIT scan

sN TCP NULL

Host scanning

Host scanning provides a detailed description of a particular host or IP address

Nmap -sp <target IP range>

OS Scanning

Nmap -O <target IP>

Scan the Most Popular Ports

This sort of scan examines the response after sending TCP and UDP packets to a port. It provides details about a host’s OS after comparing the answer to a database of operating systems.

Nmap — Top-ports 20 <target IP>

Output to a file

If we want the output of results of Nmap scan of any file, you can add an extension to the command.

Add:-oN output.txt

Some Examples

Work in your machine ,which gives more knowledge to you.

1. nmap: Basic command to run a simple scan on a target host.
2. nmap -sS: Perform a stealth SYN scan.
3. nmap -sT: Perform a TCP connect scan.
4. nmap -sU: Perform a UDP scan.
5. nmap -sA: Perform an ACK scan.
6. nmap -sW: Perform a Window scan.
7. nmap -sM: Perform a Maimon scan.
8. nmap -sN: Perform a Null scan.
9. nmap -sX: Perform an Xmas scan.
10. nmap -sF: Perform a FIN scan.
11. nmap -sL: Perform a List scan.
12. nmap -sI: Perform an idle scan.
13. nmap -p: Specify specific ports to scan.
14. nmap -o: Output results to a file.
15. nmap --top-ports: Scan the top most commonly used ports.
16. nmap --version-all: Attempt to determine the version number of all services running on the target host.

Examples with IP

1. nmap -O 192.168.1.1
2. nmap -A 192.168.1.1
3. nmap -v 192.168.1.1
4. nmap --open 192.168.1.1
5. nmap -iL targets.txt
6. nmap --resume
7. nmap --resume scan_results.xml
8. nmap --exclude 192.168.1.5 192.168.1.0/24
9. nmap --exclude 192.168.1.5 192.168.1.0/24
10. nmap -sS -sV 192.168.1.1

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