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[Gateway] H3 DNI recommendation #24400

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Merged
merged 3 commits into from
Aug 14, 2025
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[Gateway] H3 DNI recommendation #24400

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08623d4
Add DNI note
maxvp Aug 13, 2025
e3c2833
Improve wording
maxvp Aug 13, 2025
68fd436
Improve wording
maxvp Aug 14, 2025
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4 changes: 4 additions & 0 deletions src/content/docs/cloudflare-one/policies/gateway/http-policies/http3.mdx
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Expand Up @@ -26,6 +26,10 @@ Gateway can inspect HTTP/3 traffic from Mozilla Firefox and Microsoft Edge by es

If the UDP proxy is turned on in Zero Trust, Google Chrome will cancel all HTTP/3 connections and retry them with HTTP/2, allowing you to enforce your HTTP policies. If the UDP proxy is turned off, HTTP/3 traffic from Chrome will bypass inspection.

## Exempt HTTP/3 traffic from inspection

If you require HTTP/3 traffic with end-to-end encryption from the client to the origin while still using the Gateway proxy, you can create a [Do Not Inspect HTTP policy](/cloudflare-one/policies/gateway/http-policies/#do-not-inspect) to match the desired traffic. Using a Do Not Inspect policy allows HTTP/3 traffic to preserve proxy performance and end-to-end encryption by bypassing Gateway's TLS decryption and inspection.

## Force HTTP/2 traffic

To apply Gateway policies to HTTP traffic without turning on the UDP proxy, you must turn off QUIC in your users' browsers to ensure only HTTP/2 traffic reaches Gateway.
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