Secure DNS for ESP32: A Quick Guide to ESP DNS Component
·10 mins
This article introduces the ESP DNS component and explains why securing DNS resolution is essential for ESP32-based IoT devices. It shows how DNS over TLS (DoT) and DNS over HTTPS (DoH) can be enabled transparently in ESP-IDF with minimal code changes, using standard DNS APIs. Practical examples and guidance help developers choose the right protocol while balancing security, performance, and resource constraints.