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Simple Port Scanner

This is a simple port scanner script written in Bash that uses netcat (or nc) to scan a range of ports on a given IP address. The script checks if each port in the specified range is open or closed.

Prerequisites

  • netcat (or nc) must be installed on your system. You can check if it is installed by running nc -h in your terminal.

Installation

  1. Clone the repository or download the script file main.sh.

    git clone https://github.com/manuemmanuel/Port-Scanner.git

  2. Make the script executable by running:

     chmod +x main.sh

Usage

To use the script, run it with the following syntax:

bash main.sh <IP_ADDRESS> <START_PORT> <END_PORT>

Parameters

  • <IP_ADDRESS>: The IP address you want to scan.
  • <START_PORT>: The starting port number in the range.
  • <END_PORT>: The ending port number in the range.

Example

To scan ports 5550 to 5560 on the IP address 192.168.114.224, use the following command:

bash main.sh 192.168.114.224 5550 5560

Output

The script will output the status of each port in the specified range, indicating whether the port is open or closed.

└─$ bash main.sh 192.168.114.224 5550 5560
Port 5550 is closed
Port 5551 is closed
Port 5552 is closed
Port 5553 is closed
Port 5554 is closed
Port 5555 is open
Port 5556 is closed
Port 5557 is closed
Port 5558 is closed
Port 5559 is closed
Port 5560 is closed

For this demonstration I ran a service that uses port 5555.