DNS Server in Python

This is a Python-based DNS server that resolves DNS queries for .ks domains. The .ks TLD (Top-Level Domain) is a friendly nod to Kush S. a good friend, guide, and the kind of person you want to be or look up to. Cheers, Kush! 🎉 (And hey, you can always change .ks to anything you like from config if you don’t like him. 😜)

Features

• Custom .ks Domain Support: Resolve .ks domains with custom records to make your own little corner of the internet.
• Support for A and CNAME Records: Currently, the server supports only A and CNAME record types for .ks domains.
• Upstream Resolution: For domains other than .ks (e.g., .com, .in), the server gracefully forwards queries to Google's DNS server.
• JSON-based Database: The server uses a JSON file (DB/registry.json) as a database for .ks domain records.

Prerequisites

• Python 3.12.0 installed on your system.
  • Note: This project was developed and tested on Python 3.12.0. It has not been tested on other Python versions, and compatibility cannot be guaranteed.
• Required Python packages (installable via requirements.txt).

Installation & Setup

1. Clone the repository:

   git clone https://github.com/jaythorat/dns_server-python.git
   cd dns_server-python

2. Install the required Python dependencies:

   pip install -r requirements.txt

3. Start the DNS server:

   python server.py

4. Update your system or browser's DNS settings to point to this server.

5. Add .ks domain records by updating the DB/registry.json file.

Testing

1. Add .ks domain records to the DB/registry.json file (e.g., A or CNAME records).

2. Use a DNS query tool (like dig) or configure your browser/system to use the DNS server.

3. Examples of DNS queries using dig:

   • Query a custom .ks domain (e.g., test.ks):

     dig @<DNS_SERVER_IP> test.ks A

     dig @<DNS_SERVER_IP> test.ks CNAME

   • Query a regular domain (e.g., google.com):

     dig @<DNS_SERVER_IP> google.com

   Replace <DNS_SERVER_IP> with the IP address of your DNS server.

4. Verify .ks domains for proper resolution.

5. Test non-.ks domains (e.g., .com, .in) to ensure upstream resolution works properly.

Limitations

• Currently supports only A and CNAME record types for .ks domains.
• Uses a JSON file as a database, which may not scale for large datasets.
• Requires users to manually change their system or browser's DNS server settings to use this custom DNS server.

Future Enhancements

• Support for additional record types (e.g., MX, TXT) to expand functionality.
• Integration with a scalable database instead of JSON for better performance.
• Improved logging and error handling for easier debugging.
• Develop a complete registry service similar to services like GoDaddy or Cloudflare, where users can register and manage domains and DNS records.

License

This project is open-source and available under the MIT License.

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