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A Python script that uses the nmap tool and multiprocessing to quickly scan a list of hostnames and retrieve the TLS versions supported by each host.

Prerequisites

• nmap must be installed and available in the system path.

Usage

To use the tls-fast-scan script, run the following command:

python tls-fast-scan.py

The script will scan the list of hostnames in the hostname_list variable and print the TLS versions supported by each host.

Modifying the Hostname List

To modify the list of hostnames that are scanned by the script, edit the hostname_list variable at the top of the tls-fast-scan.py script. The list should contain the hostnames to be scanned, with one hostname per line.

Multiprocessing

The script uses the concurrent.futures module to parallelize the scanning of the hostnames using multiple worker processes. The number of worker processes used is determined by the number of CPU cores available on the system.

Output

The script will print the TLS versions supported by each host, in the following format:

TLS versions available on www.example.com: ['TLSv1.2', 'TLSv1.3']

If the nmap tool is not installed or is not available in the system path, the script will print an error message:

nmap is not installed on this system

Additional Options

You can specify additional options for the nmap command by modifying the arguments passed to the subprocess.run() function in the get_nmap_xml function. For example, to scan a different port, you can modify the '-p', '443' arguments to specify a different port number.

For more information on the options available for the nmap command, refer to the nmap documentation.

License

This project is licensed under the MIT License - see the LICENSE file for details.