We have disabled the Cloudflare proxy for helmonline.nl because we found out that large page responses in the admin back-end were being cut off by Cloudflare. This resulted in non-functioning admin pages. What can we do to find out why Cloudflare cuts off these pages? We had issues with our Magento backend.
I’ve had the same issues with our admin pages, there’s a baked in hard coded timeout.
I at the time ended up creating a rule to have different settings for the admin path, disabling many Cloudflare optimisations especially all the web application firewall structure.
Note: To compensate for the loss of the firewall, I added “Cloudflare access” in front of the admin path - configured to allow for email 2FA to our email plus a few useful identity provider. That provides no protection from a staff member doing stupid stuff or being compromised, of course.