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Cloudflare DNS Breaks PRTG UI

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When we set our PRTG sub-domain on CloudFlare, we can access the login page and login to PRTG, but we can't actually load any other pages beyond that. If we select Devices,Sensors,ect. on the page, nothing ever happens.

When we turn off CloudFlare services and setup direct access, everything works. If we setup the sub-domain through any "standard" provider, it works.

Has anyone else had problems with PRTG hosting and CloudFlare?

Thanks.

cloudflare domain prtg

Created on Feb 25, 2018 8:30:58 PM by  CrzyGK (0) 1



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Did you configure the DNS name in PRTG accordingly (Setup | System Administration | User Interface)?


Kind regards,
Stephan Linke, Tech Support Team

Created on Feb 26, 2018 12:49:42 PM by  Stephan Linke [Paessler Support]

Last change on Feb 26, 2018 12:49:47 PM by  Stephan Linke [Paessler Support]



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Yes, the DNS name is set correctly.

Created on Feb 28, 2018 3:10:23 AM by  CrzyGK (0) 1



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While we have little to no customers using cloudflare with PRTG - what URL do you get redirected to after the login?


Kind regards,
Stephan Linke, Tech Support Team

Created on Feb 28, 2018 11:02:25 AM by  Stephan Linke [Paessler Support]



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I get redirected to "https://prtg.ourdomain.com/welcome.htm" after I login.

Created on Feb 28, 2018 4:14:44 PM by  CrzyGK (0) 1



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Is there anything in the browser console that hints on what exactly the problem could be? Anything in PRTGs webserver logs located in the data directory? You could also provide us a support bundle via Setup | Contact Support so we could check it. Adding cloudflare beforehand and triggering the issue will help finding it in the log files.


Kind regards,
Stephan Linke, Tech Support Team

Created on Mar 1, 2018 10:31:25 AM by  Stephan Linke [Paessler Support]



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I have submitted a support bundle. The webserver logs only show "GET" requests for the items I click on. My browser console only displays the following:

unreachable code after return statement [Learn More] rocket.min.js:3863:111 unreachable code after return statement [Learn More] rocket.min.js:27627:65 unreachable code after return statement [Learn More] rocket.min.js%20line%204%20%3E%20eval:3863:111 window.controllers/Controllers is deprecated. Do not use it for UA detection. rocket.min.js%20line%204%20%3E%20eval:28222:417 unreachable code after return statement [Learn More] rocket.min.js%20line%204%20%3E%20eval:27627:65

Created on Mar 4, 2018 4:27:31 AM by  CrzyGK (0) 1



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From the errors you get, it actually seems that cloudflare isn't able to process PRTG's JavaScript.

I kindly ask you to submit another Support Bundle, somehow I cannot find the previous one. Please refer to the case "PAE1005001" when submitting the bundle.

Thank you!


Best regards,
Andreas Günther, Tech Support Team

Created on Mar 5, 2018 3:30:49 PM by  Andreas Günther [Paessler Support]



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