Question
How does a firewall potentially cause a 526 error?
Asked by: USER3179
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50 Answers
Answer (50)
A firewall configured on your server or network can block Cloudflare's IPs from accessing your origin server. This blockage prevents the connection, leading to a timeout and the 526 error. You need to ensure Cloudflare's IP ranges are whitelisted in your firewall settings. Check Cloudflare's documentation for the most up-to-date IP ranges.