- Assuming there are no Cloudflare Firewall Rules or Rate Limiting settings or filters in place through your Cloudflare dashboard, the problem may be with your origin server. Check with your server administrator or hosting provider to ensure there are no rules or filters in place on the origin that would cause this issue. You’ll want to ask them to check for IP address, browser, and user-agent blocks. A 403 error in the Speed tab is always returned directly from the origin web server, not Cloudflare, and is generally related to permission rules on the origin server. Either a permission rule or an error in the .htaccess rules, the Mod_security rules, or the IP Deny rules are the most likely reasons for the 403. Use the cURL below to the origin to check for a 403 Forbidden:
$ curl -I example.com --connect-to ::123.123.123.123
HTTP/1.1 403 Forbidden
Date: Mon, 11 Nov 2019 09:28:04 GMT
Server: Apache
Content-Type: text/html; charset=iso-8859-1
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