🛠️ Using Nmap for Network Scanning 🛠️

Nmap (Network Mapper) is a powerful open-source tool for network discovery and security auditing. Below are some common commands and their uses:

Installation

To install Nmap on a Debian-based system (like Ubuntu), use the following command:

sudo apt-get update -y
sudo apt-get install nmap -y

Basic Commands

Perform a Basic Port Scan

This command scans for open ports on the specified host:

nmap example.com

Replace example.com with the target host or IP address.

Specify a Range of Ports

To scan a specific range of ports:

nmap -p 80-100 example.com

This scans ports 80 through 100.

Scan All Ports (Full Port Scan)

To scan all 65535 ports:

nmap -p- example.com

Aggressive Scan with OS Detection

An aggressive scan includes OS detection, version detection, script scanning, and traceroute:

nmap -A example.com

Verbose Output

For more detailed output:

nmap -vv example.com

Advanced Scanning

OS Detection

To detect the operating system of the target:

nmap -O your-website.com

Useful Script Scanning

To run a vulnerability script scan, which uses Nmap's scripting engine to check for common vulnerabilities:

nmap --script vuln your-website.com

Additional Notes

• Replace example.com and your-website.com with the actual domain or IP address you want to scan.
• Use nmap responsibly and ensure you have permission to scan the target systems. Unauthorized scanning can be illegal and unethical.

This documentation provides a foundational overview of common nmap commands to get you started with network scanning and security assessments.