Disclaimer:
This post is for educational purposes only. Unauthorized scanning or hacking of websites or networks is illegal and can lead to severe consequences. Always ensure you have proper permission before performing any scans or security tests.

"Want to Hack a Website? Here’s Where It All Begins!"

The first step is finding all the open ports on the website. These ports act as entry points, and discovering them is crucial.

To do this, we use a powerful tool called Nmap. It scans and reveals all the open ports, giving you a map of what’s accessible.

Nmap, which stands for Network Mapper, is a free tool that helps you explore networks and check for security issues. It's really helpful for system admins and those interested in cybersecurity.
Common Uses:
Scanning networks, Detecting open ports, Identifying running services, Checking for vulnerabilities

Step.1: Installing Nmap
For Linux:
Most Linux distributions include Nmap in their repositories. Install it using:

sudo apt install nmap 

For Windows:

Nmap official website

Step.2:Give commands:
0.For summary of options

nmap -h

1.Scan a Single Host

nmap 192.168.1.1

nmap www.google.com

2.Scan All Ports

nmap -p- 192.168.1.1

3.Scanning Your Local Network

nmap -sn 192.168.1.0/24

1. For Aggressive scanning

nmap -A www.google.com

5.To scan UDP ports

nmap -sU www.google.com

6.To scan TCP ports

nmap -sT www.google.com

7.To scan top ports

nmap --top-ports <number> www.google.com

8.Scan Excluding the range of port

nmap --exclude-ports 1-100 www.google.com

9.To increase the scanning speed

nmap -F www.google.com