![\"\"](\"https:\/\/linuxresellerwebhosting.in\/blog\/wp-content\/uploads\/2024\/03\/cloudafrare.png\")
<\/p>\nCloudflare 522 Error ? is an HTTP status code that indicates a connection issue where the origin server doesn\u2019t reply, often seen with CDN services like Cloudflare.<\/p>\n
Connection between cloudfare server and origin server got interrupted or not connected. Connection failure.<\/p>\n
It happens when Cloudflare can\u2019t get a response from your site within the expected timeframe.<\/p>\n
Here in this article we will know about the Cloudflare 522 Error and what cause and how to fix it.<\/p>\n
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Cloudflare is a content delivery network (CDN) service that accelerates and secures website connections. However, when a website’s origin server fails to respond within a certain timeframe, users encounter an error code called Cloudfare 522 error<\/em>. This error code is often accompanied by the message Connection timed out<\/em> or Cloudflare error 522<\/em>.<\/p>\n The 522 error occurs when the Transmission Control Protocol (TCP) handshake between the web server and a website that uses Cloudflare as the CDN fails.<\/p>\n These are the steps in this three-way handshake:<\/p>\n 1. Cloudflare initiates a connection request by sending a packet with the SYN (Synchronize)<\/strong> flag to the origin server.<\/p>\n 2. The origin server receives the packet and acknowledges the connection request by sending the SYN-ACK<\/strong> packet to Cloudflare.<\/p>\n 3. Cloudflare receives the SYN-ACK<\/strong> packet. To confirm the connection and complete the handshake, the CDN is expected to respond with the packet with the ACK<\/strong> (Acknowledgement) flag.<\/p>\n The ACK<\/strong> flag confirms that the Handshake is a success and that the communication continues.<\/p>\n However, if the origin server does not respond with SYN-ACK<\/strong> in time and the packet fails to reach Cloudflare, the CDN does not send the ACK<\/strong> signal, resulting in an unsuccessful handshake.<\/p>\n Cloudflare returns a 522 error to the user’s\u00a0browser,\u00a0indicating that the connection has timed out and the server is unable to establish a connection with the website.<\/span><\/p>\n What Causes of a 522 error ?<\/p>\n The unsuccessful handshake is the main cause of error 522. However, the server’s slow response time has various reasons. The most common causes of the 522 error are:<\/span><\/p>\n Fix: How to fix a 522 error ?<\/p>\n Following is the few points to fix this 522 error.<\/p>\n 1.Optimize the Origin Server<\/strong><\/p>\n The origin sever which hosts<\/a> the website plays a crucial role while delivering contents to visitor’s\u00a0overloading leads to slow or unresponsive servers<\/a> causing the 522 error.<\/span><\/p>\n 2: Check the Firewall Settings<\/strong> 3: Customize DNS\/IP Settings<\/strong> 4: Check for SSL Certificate Issues<\/strong> 5: Turn on KeepAlive<\/strong> To fix error 522, adjust the KeepAlive setting in the web server’s configuration file, by adding the following:<\/p>\n KeepAlive On<\/p>\n 6: Check the Cloudflare Configuration<\/strong> 7: Enable Cloudflare’s Under Attack Mode<\/strong> 1. Choose the website for which you want to enable the Under Attack<\/strong> mode.<\/p>\n 2. Navigate to the menu at the top of the page.<\/p>\n 3. Select the Overview<\/strong> tab.<\/p>\n Scroll down to the Quick Actions<\/strong> section.<\/p>\n 5. Click the DNS Settings<\/strong> tab.<\/p>\n 6. Toggle the I’m Under Attack<\/strong> switch.<\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Cloudflare 522 Error ? is an HTTP status code that indicates a connection issue where the origin server doesn\u2019t reply,<\/p>\n","protected":false},"author":2,"featured_media":775,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[2,1],"tags":[44,37,45,46],"class_list":["post-763","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","category-uncategorized","tag-44","tag-error","tag-handshake","tag-origin-server"],"_links":{"self":[{"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/posts\/763","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/comments?post=763"}],"version-history":[{"count":12,"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/posts\/763\/revisions"}],"predecessor-version":[{"id":776,"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/posts\/763\/revisions\/776"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/media\/775"}],"wp:attachment":[{"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/media?parent=763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/categories?post=763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/linuxresellerwebhosting.in\/blog\/wp-json\/wp\/v2\/tags?post=763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
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\nFirewalls sometimes block traffic from Cloudflare, which causes the 522 error.<\/p>\n
\nIncorrect DNS configuration is one of the causes of the cloudfare 522 error. To review Cloudflare DNS settings and fix potential issues<\/p>\n
\nA valid and up-to-date SSL certificate is essential to prevent the Cloudflare 522 error<\/p>\n
\nKeepAlive is a header that maintains a constant connection between a client and a server. Both Cloudflare and the origin web server use KeepAlive.<\/p>\n
\nReview the Cloudflare configuration to ensure that it is set up correctly and that no issues are causing the 522 error<\/p>\n
\nIf the issues persist even after following the steps above, enable the Cloudflare Under Attack mode. This security feature enhances the protection against DDoS (Distributed Denial of Service) attacks and helps mitigate the 522 error.<\/p>\n![\"Cloudflare](\"https:\/\/phoenixnap.com\/kb\/wp-content\/uploads\/2023\/04\/cloudflare-overview-tab.jpg\")
<\/p>\n![\"Cloudflare](\"https:\/\/phoenixnap.com\/kb\/wp-content\/uploads\/2023\/04\/activate-under-attack-mode.jpg\")
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