🗄️ Databases & Backend

Cloudflare's Programmable Flow Protection: Customers Finally Script Their Own DDoS Defenses

Cloudflare just flipped the DDoS script. Instead of generic blocks, Magic Transit customers can now deploy their own eBPF programs to surgically slice bad UDP traffic.

DevTools Feed Apr 02, 2026 3 min read 17 views
Illustration of UDP packet dissection and custom eBPF logic in Cloudflare's Programmable Flow Protection

⚡ Key Takeaways

  • Customers code custom eBPF for UDP DDoS, ditching crude blocks for precise mitigation. 𝕏
  • Runs globally on Cloudflare's network in userspace, blending flowtrackd with XDP efficiency. 𝕏
  • Fills gap for proprietary protocols in gaming, VoIP—echoes Linux eBPF's networking shift. 𝕏
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#Cloudflare #Cloudflare Magic Transit #DDoS mitigation #Magic Transit #Programmable Flow Protection #eBPF

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Originally reported by Cloudflare Blog

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