DNS over HTTPS vs DNS over TLS

DNS

DoH

Compare two approaches to encrypted DNS. Port usage, censorship resistance, network visibility, and browser/OS support.

DoH DoT DNS

Compare the two most popular public DNS resolvers. Privacy policies, speed, DNSSEC support, and filtering …

Understand the two roles in DNS resolution. How authoritative servers hold records and recursive resolvers …

Compare two major open-source DNS servers. Authoritative + recursive vs recursive-only, configuration complexity, and performance.

Compare two popular DNS-level ad blockers. Setup, filtering capabilities, encrypted DNS support, UI, and resource …