Let’s discuss 2 issues related to Plesk Cloudflare Proxy along with its solutions in this article. Bobcares, as a part of our Plesk Hosting Support offers solutions to every query that comes our way.

Plesk Cloudflare Proxy: Case Studies

Case 1: The user’s websites become inaccessible when Cloudflare is set up in proxied mode, and Plesk displays a message stating that the hostname cannot be resolved and providing Cloudflare’s IP address. To fix this, though, we have to move from Cloudflare to DNS mode, which does not take advantage of Cloudflare’s benefits. We can try the following method to set up Cloudflare to efficiently forward HTTP (port 80) and HTTPS (port 443) traffic while ensuring website accessibility and making use of Cloudflare’s services.

Fix: In response to the observation that HTTPS (listening on port 443) is accepted despite the absence of an SSL certificate on the web server, investigating why Flexible SSL mode may not be an optimal choice. Also, consider potential issues such as redirection loops and mixed content errors. It’s better to set up an SSL certificate on the host origin/server and set up the Full (Strict) SSL mode for improved security and functionality. The best ways include:

1. Create one with Let’s Encrypt, Acme, or other similar programs.

2. Buying one from certain SSL suppliers.

3. Using Advanced Certificate Manager to buy a Dedicated SSL.

4. Create and set up a Cloudflare Origin CA Certificate.

Case 2: After moving certain DNS records to Cloudflare, the website may function correctly, accessing the Plesk GUI, hosted on a subdomain like plesk.mydomain.com, needs disabling the proxy setting for that specific record in DNS settings.

Fix: That’s the expected action. Due to Plesk’s dynamic nature, using a Cloudflare proxy to cache Plesk is absurd. In addition, the CloudFlare proxy disables all mail ports. Hence, if we enable CloudFlare proxy for the server hostname, no email traffic is available.

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Conclusion

To conclude, the article offers two issues along with its solutions regarding the Plesk Cloudflare Proxy.