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Dev.to
7/5/2026
The original title is: "built a self-deploying DNS Firewall Appliance for ISPs (ISO + 3D Dashboard)"

The original title is: "built a self-deploying DNS Firewall Appliance for ISPs (ISO + 3D Dashboard)"

Original: built a self-deploying DNS Firewall Appliance for ISPs (ISO + 3D Dashboard)

Short summary

Sentinel DNS is an open-source DNS firewall appliance for ISPs with automated Kickstart deployment and dynamic kernel tuning. It features a 3D NOC dashboard powered by Three.js showing real-time threat blocking, and implements RFC 8767 caching to continue DNS resolution for 24 hours during root-server outages. Code and official site are available on GitHub.

  • •Purpose-built DNS firewall appliance with unattended installation and hardware-aware auto-tuning
  • •3D Network Operations Center dashboard visualizes geographic threat arcs in real-time
  • •Resilience feature: serves cached DNS for 24 hours if global root servers fail

Generated with AI, which can make mistakes.

#open-source#product-launch
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