dpt-tool

Overview

The dpt-tool is a utility written in Python 3 designed to test various basic properties of public DNS servers. It provides a simple way to examine and analyze the supported features of these servers through a command-line interface.

Installation

To install the dpt-tool, use the following command:

pip install -r requirements.txt

This will resolve the necessary dependencies for the tool to run.

Usage

To use the tool, you can follow the example commands below.

Example 1: Performing all tests with default DNS servers

python main.py -c all

Example 2: Specifying the DNS servers and output file

python main.py -c udp_payload_size, do_bit -s '{"Cloudflare": ["1.1.1.1", "1.0.0.1"], "Google Public DNS": ["8.8.8.8"]}' -o output.txt

The available test options are:

• opt_record: Support OPT Record (RFC 6891)
• udp_payload_size: Default UDP payload size
• client_subnet: Client Subnet (RFC 7871)
• nsid: NSID (RFC 5001)
• version_bind: version.bind CHAOS/TXT
• server_id: id.server CHAOS/TXT
• do_bit: DO bit
• response_validation: Response validation
• dnskey_algorithm: DNSKEY algorithms (RFC 8624)
• dot: DNS-over-TLS (RFC 7858)
• doh: DNS-over-HTTPS (RFC 8484)
• 0x20: 0x20 encoding
• ede: EDNS Extended Errors (EDE)

For specifying the DNS servers, the input must be in JSON format containing a dictionary of server names mapped to a list of IP addresses for each server.

Feedback

Feedback and contributions are welcome! If you encounter any issues or have ideas for improvements, please feel free to open an issue or a pull request on the GitHub repository.