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What It Takes to Run a Free & Private DNS Service with John Todd from Quad9

September 18, 2026 · 1 h 20 min

Show notes

DNS quietly reveals everywhere you go online - even on encrypted sites. In this interview, John Todd (CTO at Quad9) provides a DNS masterclass: how DNS works, the privacy implications, how to change your DNS, why Quad9 collects nothing on you, why they are being sued, DNS vs. VPNs, and how a nonprofit can fund itself without compromising privacy.

🔗 SOURCES & LINKS
• Quad9: https://quad9.net

⏱️ TIMESTAMPS

  • (00:00) - INTRO
  • (01:00) - WHAT IS QUAD9?
  • (01:30) - HOW IS IT FREE?
  • (02:48) - WHAT'S RECURSIVE DNS?
  • (04:11) - DNS PRIVACY CONCERNS
  • (07:19) - DEFAULT DNS PROVIDER + OPTIONS
  • (09:15) - DNS ON iOS
  • (11:02) - WHERE TO SET YOUR DNS
  • (13:47) - CYBERSECURITY & PRIVACY
  • (16:16) - WHAT'S BLOCKED
  • (18:55) - CUSTOM DNS ON A ROUTER
  • (20:11) - COMMON MISCONCEPTIONS
  • (21:50) - HTTPS VS. TLS VS. QUIC
  • (25:56) - RECOMMENDATIONS
  • (27:20) - CENSORSHIP CIRCUMVENTION
  • (30:01) - SNI & ECH
  • (33:49) - LAWSUITS
  • (40:45) - THE NUANCE BEHIND BLOCKING
  • (42:23) - FOLLOW THE FIGHT
  • (42:52) - THE QUAD9 TEAM
  • (43:39) - OPERATION COSTS
  • (45:34) - MONETIZING DATA?
  • (50:25) - OTHER REVENUE MODELS
  • (57:53) - WHY TRUST QUAD9?
  • (01:00:39) - SPEED DIFFERENCES
  • (01:06:32) - QUAD9 VS. DIY FILTERING
  • (01:08:42) - VPN VS. DNS
  • (01:13:08) - PI-HOLE
  • (01:15:11) - LOOKING FORWARD
  • (01:18:10) - HOW TO FOLLOW

🎥 VIDEO
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