CloudFlare proxied websites don't work on Virgin Media but do on EE and some U.S providers

[fritex]

@dohlman

4 days ago

It could be the DNS propagation issue, if so, or a DNS cache.

@dohlman

self signed certificate

@dohlman

Now the SSL or HTTPS is a problem.

May I ask what kind of SSL option have you got selected under the SSL/TLS tab for your domain at Cloudflare dashboard? (Flexible, Full, Full Strict ...)

Here is a way to re-check if you correctly setup the SSL for your domain with Cloudflare:

Deprecated - Step 2: Setting up SSL with Cloudflare

This tutorial is deprecated in favour of Get started with SSL/TLS · Cloudflare SSL/TLS docs

Archive

This tutorial covers getting SSL working with Cloudflare in various different scenarios. This assumes you already have your website set up on Cloudflare with all your DNS records set to , if not - please visit <a href="https://community.cloudflare.com/t/64309">Step 1</a>. Do you want the website to use HTTPS? Yes Do you already have a valid SSL certificate installed…

If any other issues appear, follow the needed steps for troubleshooting from article below:

Deprecated - Troubleshooting SSL/TLS issues

This tutorial is deprecated in favour of Troubleshooting · Cloudflare SSL/TLS docs

Archive

This tutorial post covers the steps you should take if you have enabled Cloudflare, but HTTPS is not working on the site. If your main domain is secure, but a subdomain is not, please see <a href="https://community.cloudflare.com/t/ssl-tls-not-working-on-subdomain/75181.">https://community.cloudflare.com/t/ssl-tls-not-working-on-subdomain/75181.</a> 1. Check that the DNS record is se…

Regarding available SSL options at Cloudflare dashboard, check here:

Deprecated - SSL/TLS app Settings

This tutorial is deprecated in favour of Get started with SSL/TLS · Cloudflare SSL/TLS docs

Archive

SSL/TLS Configuration Video: This tutorial covers basic settings in the SSL/TLS app of the Cloudflare Dashboard, including SSL Mode [Off/Flexible/Full/Full (Strict)], Cloudflare Origin Certificates, ‘Always Use HTTPS’ and ‘Automatic HTTPS Rewrites’. The settings covered here can all be found by visiting <a href="http://Cloudflare.com">Cloudflare.com</a>, logging in, selectin…

In case you do not have an SSL certificate, you can use Cloudflare SSL, if so, kindly make sure you follow the instructions as follows on the below article to setup an SSL certificate using Cloudflare CA Origin Certificate:

• Origin CA certificates · Cloudflare SSL/TLS docs

Last but not least, kindly have a look here for more information regarding correct SSL settings:

Why you should choose Full Strict, and only Full Strict

Unencrypted & unverified connections Imagine you open Paypal and suddenly get that warning [image] Would you continue? Probably not. For decades leaders in IT security have advocated that people upgrade their sites from unencrypted HTTP to secure HTTPS. And for a reason, everything you send via an HTTP connection is sent in plain text and can be intercepted at any point between you and the server. Equally, you’d probably not proceed if you got such a warning, right? [image] That’s when th…

@dohlman

NET::ERR_CERT_AUTHORITY_INVALID

May I suggest looking into below article for a solution:

Community Tip - Fixing NET::ERR_CERT_AUTHORITY_INVALID

Error Try the suggestions in this Community Tip to help you fix NET::ERR_CERT_AUTHORITY_INVALID when visitng a site running Cloudflare. Background The Error NET::ERR_CERT_AUTHORITY_INVALID while visiting a site running Cloudflare indicates the certificate authority that issued the sites SSL certificate is not valid or the site is using self-signed certificate. When this happens, Chrome will display the error NET::ERR_CERT_AUTHORITY_INVALID. [Dedicated SSL] Quick Fix Ideas Contact the sit…

@dohlman

http://thednclan.net

As far for now, at first sight Website is working fine and loading up from by side over HTTPS.