521 Web server is down

HTTP response status code 521 Web server is down is an unofficial server error that is specific to Cloudflare. This HTTP status code occurs when the HTTP client was able to successfully connect to Cloudflare but it was unable to connect to the origin server.

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How to Fix Cloudflare Error 521 in WordPress: Easy Solutions

8. Deactivate mod_reqtimeout and mod_antiloris on your web server. Apache modules like mod_reqtimeout and mod_antiloris are designed to prevent DoS and DDoS attacks by limiting how client connections interact with your server. What I mean by this is that these modules manage connection timeouts and the number of simultaneous connections from a …

WhatsApp: +86 18221755073

521 Web server is down

HTTP response status code 521 Web server is down is an unofficial server error that is specific to Cloudflare. This HTTP status code occurs when the HTTP client was able to successfully connect to Cloudflare but it …

WhatsApp: +86 18221755073

Error 521: Web server is down

cURL allows you to simulate a HTTP request, so it is a good tool for checking that your origin server is working properly. You can run cURL via the Terminal command line tool on Mac OS or Linux. Run a cURL command against your server IP using the A record or CNAME for your domain shown in the DNSapp of the Cloudflare dashboard. curl -v

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How to Fix Cloudflare Error Code 521 (10 Solutions Visual …

Step 3: Analyze the Output. Observe the output displayed in the command prompt. Focus on the lines that show the status of packets: Packets Sent: Indicates the number of packets sent to the server. Received: Shows how many packets the server returned. Lost: Indicates how many packets were lost during the process.some text Log into Your cPanel: Start by opening …

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Error 521: Web Server is down

Occurs when the origin web server refuses connections from Cloudflare. Security solutions at your origin may block legitimate connections from certain Cloudflare IP addresses. The most common ones are: Offline origin web server application; Blocked Cloudflare requests; Fixes Step 1: Contact NET Support

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