by-sabbir/dns-over-tls

DNS to DNS-over-TLS Proxy

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Features

• Accepts multiple client request
• Handles Both TCP and UDP requests using multithreading
• Logs for client query, answer from DNS server, and errors

Requirements

• Python3
• Docker
• SSL certificate (included)

Usage

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1. Makefile

• Build

  make build

• Run

  make run

• Test: UDP, TCP proxies, and multiple request

  make test-tcp
  make test-udp
  make multiple-client

• Inspect Logs

  make logs

• Cleanup Workspace

  make cleanup

Makefile contains two variables- SERVICE_NAME and SERVICE_PORT to mitigate conflicts as port 53 is a common port and in most server, systemd resolver may already use the port by default.

2. Docker

• Build

  docker build -t dns-over-tcp-proxy .

• Run

  docker run -itd -p 53:53/tcp -p 53:53/udp dns-over-tcp-proxy

• Test: UDP, TCP proxies

  dig @0.0.0.0 sabbir.dev        # for UDP
  dig @0.0.0.0 sabbir.dev +tcp   # for TCP

Improvements

• Cache middlewire to decrease latency
• IP Block whitelist/blacklist
• Block malicious servers
• DDoS protection
• Ad Block