Using the search bar type “fail2ban” and select IP Address Banning (Fail2Ban) from the instant results.
You can lookup the cloudflare IP you are actually using with MX Toolbox or any DNS lookup tool.įor the result(s) you will see one or more IPs.Ĭopy these to your Trusted IP Addresses in Plesk The FixĬloudflare claims to have a comprehensive list, but mine was not on there. consider to ask such questions at communities, who are specialized in cloudflare knowledge and/or nginx knowledge.
If you are using Cloudflare have Fail2Ban activated in Plesk, it may be overactive, intermittently blocking Cloudflare’s IP. at this forum you will meet users with knowledge about Plesk, who might have additional knowledge here and there, but if you desire UNIQUE support, for UNIQUE cloudflare settings and/or UNIQUE nginx settings, pls. If your hosting shows your site is online, or you disable cloudflare and don’t have trouble accessing the site, it’s probably “blocked Cloudflare requests.”Īlas, with Plesk you are the hosting provider. Plesk’s user-friendly interface and the many tools that come with it make. In fact, many think Plesk is more than just a control panel. It has everything you need to develop, build websites and apps that scale on the cloud. Source: Cloudflare 521 Error Troubleshooting Plesk is a web hosting control panel with ready-to-code environment, powerful extensions and more. Built by some of the industry’s best developers and and carefully refined using customer feedback, our control panel contains everything you need to. Designed for maximum hosting, the control panel has been crafted to meet all your domain and hosting management needs. The two most common causes of 521 errors are: We offer a user-friendly control panel called Plesk. Additional troubleshooting information.Ĭloudflare states this is due to two possibilities: As a result, the web page is not displaying.Ĭontact your hosting provider letting them know your web server is not responding.
The web server is not returning a connection. Error 521 from Cloudflare when trying to access site using Plesk
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