This is a simple Python-based port scanner script that scans a range of ports on a specified target IP address. It uses the socket library to check if a port is open by attempting to establish a connection.
- Scans ports within a specified range (50 to 85 by default).
- Displays information about the target IP and the time the scan started.
- Shows open ports in the specified range.
- Handles common errors, including invalid arguments, unreachable hosts, and interrupted scans.
- Python 3.x
- This script is written in Python 3, so ensure it is installed.
- Required libraries:
socket,sys,datetime(all are included in Python's standard library).
python3 scanner.py <IP Address>To scan a target at IP address 192.168.1.1, run:
python3 scanner.py 192.168.1.1The output will display:
- A banner showing the target IP and the start time of the scan.
- Open ports in the specified range (e.g., "Port 80 is open").
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Scanning Target 192.168.1.1
Time Started: 2023-11-05 13:25:36.123456
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Port 80 is open
Port 53 is open- Target Definition: The target IP address is specified as a command-line argument. The script converts the domain name to an IP address if a hostname is given.
- Port Scanning: It attempts to connect to each port within the range 50-85 using TCP. If a port is open, it prints the port number.
- If the user doesn’t provide an IP, it shows syntax instructions.
- Handles cases for unreachable hosts, connectivity issues, and script interruptions (e.g., Ctrl+C).
Permission: Ensure you have permission to scan any network or IP. Unauthorized scanning may violate terms of service and is generally illegal without consent. Port Range: The default range is 50-85. You can modify the for port in range(50,85): line in the code to scan other ranges.
This script is intended for educational and authorized network testing purposes only. Ensure you have proper authorization before running this script on any network.