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Why does Firefox makes an http request to ietf.org even when in HTTPS-only mode? (OCSP related)

n0u355lo
n0u355lo
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When in HTTPS-only mode and the "Query OCSP responder servers" settings is enabled, Firefox makes an http request on port 80 to ietf.org.

details:

  • HTTPS-only mode on, OCSP on:
  • go to http://ietf.org/
  • requests are made to:

ocsp.starfieldtech.com ietf.org ocsp.digicert.com

  • HTTPS-only mode on, OCSP on:
  • go to https://ietf.org/
  • requests are only made to:

ocsp.starfieldtech.com ocsp.digicert.com

why is this? (Firefox 103 on macOS 10.15)

When in HTTPS-only mode and the "Query OCSP responder servers" settings is enabled, Firefox makes an http request on port 80 to ietf.org. details: * HTTPS-only mode on, OCSP on: * go to '''http'''://ietf.org/ * requests are made to: ocsp.starfieldtech.com ietf.org ocsp.digicert.com * HTTPS-only mode on, OCSP on: * go to '''https'''://ietf.org/ * requests are only made to: ocsp.starfieldtech.com ocsp.digicert.com why is this? (Firefox 103 on macOS 10.15)

All Replies (2)

n0u355lo
n0u355lo Question owner
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(ignore this post)

Modified by n0u355lo

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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The server at http://ietf.org returns a 302 redirect to https://www.ietf.org/ so I'm not sure whether HTTPS-Only causes anything different to happen there.

There probably is a diagram somewhere showing the exact request flow for HTTPS-Only mode and whatever implications OCSP might have.