Port-Scanner

Basic Port Scanner with Verbose Mode

This Python script is a simple port scanner that can scan all ports, a specific range of ports, or specific ports on a target IP address. It also includes a verbose mode that provides detailed output for each port scanned.

Features

Scan all ports (1–65535).
Scan a range of ports (e.g., 20–80).
Scan specific ports (e.g., 22, 80, 443).
Verbose output to show detailed status for each port scanned.
Works on both Linux and Windows.

Prerequisites

Before using the script, make sure you have Python 3.x installed on your system.

Installation

Download the script: Save the script as app.py.
Make the script executable (Optional, for Linux/Mac):
```
chmod +x app.py
```

Usage

You can use this script via the command line or terminal. The basic syntax is as follows:

python app.py -t <target_ip> -p <ports> [options]

Arguments:

-t, --target (required): Target IP address to scan.
-p, --ports (required): Ports to scan. You can specify:
- all: Scan all 65,535 ports.
- start-end: Scan a range of ports (e.g., 20-80).
- port1,port2,...: Scan specific ports (e.g., 22,80,443).

Optional Flags:

-v, --verbose: Enable verbose output for detailed scanning information (e.g., connection attempts, errors).

Example Commands

1. Scan All Ports with Verbose Output

This command will scan all ports (1-65535) on the target IP 192.168.1.1 and print detailed messages for each port.

python app.py -t 192.168.1.1 -p all -v

Output:

Scanning 192.168.1.1...
[-] Port 1: CLOSED
[-] Port 2: CLOSED
[+] Port 22: OPEN
[+] Port 80: OPEN
...
Open ports on 192.168.1.1: [22, 80, 443]

2. Scan a Specific Range of Ports with Verbose Output

This command will scan ports from 20 to 80 on the target IP 192.168.1.1 and print detailed messages.

python app.py -t 192.168.1.1 -p 20-80 -v

Output:

Scanning 192.168.1.1...
[-] Port 20: CLOSED
[+] Port 22: OPEN
[+] Port 80: OPEN
...
Open ports on 192.168.1.1: [22, 80]

3. Scan Specific Ports without Verbose Output

This command will scan only ports 22, 80, and 443 on the target IP 192.168.1.1 and print only the list of open ports (no verbose output).

python app.py -t 192.168.1.1 -p 22,80,443

Output:

Scanning 192.168.1.1...
Open ports on 192.168.1.1: [22, 80, 443]

How It Works

Port Scanning: The script attempts to create a TCP connection to the specified ports on the target IP address. If the connection succeeds, the port is marked as open; otherwise, it is closed.
Verbose Mode: In verbose mode (-v), the script prints the status for each port being scanned (e.g., OPEN, CLOSED, or errors).