Diagnostics Error (connect back)

  • Resolved barrychapman

    (@barrychapman)


    3 years, 4 months ago

    In the WordFence Diagnostics, I see the following error

    wp_remote_post() test back to this server failed! Response was: 403 Forbidden
    This additional info may help you diagnose the issue. The response headers we received were:

    HTTP/1.1 403 Forbidden
Server: CloudFront
Date: Wed, 28 Jul 2021 16:39:00 GMT
Content-Type: text/html
Content-Length: 919
Connection: close
X-Cache: Error from cloudfront
Via: 1.1 e9a02c3aa85d921b20debfa4cdea5e4.cloudfront.net (CloudFront)

    And the HTML:

    <TITLE>ERROR: The request could not be satisfied</TITLE>
</HEAD><BODY>
<H1>403 ERROR</H1>
<H2>The request could not be satisfied.</H2>
<HR noshade size="1px">
Request blocked.
We can't connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner.
<BR clear="all">
If you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.
<BR clear="all">
<HR noshade size="1px">
<PRE>
Generated by cloudfront (CloudFront)

    What is causing this error? Everything looks correct, and I can access the site fine

Viewing 1 replies (of 1 total)
  • Plugin Support WFAdam

    (@wfadam)

    Hello @barrychapman and thanks for reaching out to us!

    It looks like what is happening is Cloudfront is blocking Wordfence requests to the Wordfence server and back to your site. This is why you see Cloudfront in the HTML, as it’s delivering a 403 block to the Wordfence server.

    We might need to do this in two parts:

    1) We want to make sure your site has all the correct settings to run with Cloudfront:
    ?Navigate to Wordfence > All Options > General Wordfence Options > How does Wordfence get IPs and change this setting to Use the X-Forwarded-For HTTP header. After that, you will need to add the Cloudfront server IPs to the trusted proxies. You will see Edit Trusted Proxies at the bottom of this same section in All Options.

    ?Add all of the Cloudfront IP’s from this link into the Trusted Proxies: https://d7uri8nf7uskq.cloudfront.net/tools/list-cloudfront-ips

    2) Make sure your site and Cloudfront are not blocking the following IPs:
    44.239.130.172
    44.238.191.15
    35.155.126.231

    ?Once you get this in place, it should resolve the issues you are seeing. Let me know how it goes!

    Thanks again!

Viewing 1 replies (of 1 total)
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