Sorry，Source WebSite is going wrong and it can’t be accessed temporarily!
1.源站宕機、間歇性卡頓。? 請檢查源站的存活狀態。如何檢查源站狀態。
2.源站響應超時30秒。?? 超過30秒未響應的請求會被雲防護斷開，顯示502。
3.請核查在雲防護DNS設置配置的源站IP是否正確，是否還留存錯誤的、已經不使用的服務器IP。
4.請檢查源站防火墻是否攔截雲防護節點IP。?? 詳見FAQ
5.當前頁面由於敏感信息已經被網站衛士屏蔽，請刪除相關違規信息。
-如果域名服務商的防火墻攔截雲防護節點IP， 請與域名服務商聯系解封並加白IP段。
-如果服務器防火墻（安全狗等）攔截雲防護節點IP，請將雲防護的IP段添加到服務器防火墻白名單中。
-如果您服務器未配置任何防火墻，請與您的機房聯系，將雲防護的IP段添加到機房防火墻白名單中。
Why th台中中古設備收購ere will be 502, snapshots after using WebGuard?
The reason may as follow:
1.The source website down or intermittent seriously slow.Please check the survival status of source website . How to check the source website status
2.The response time of source website exceed 30 seconds.The request time more than 30 seconds will be disconected by WebGuard ,and Display 502.
3.Please check if the source IP in the DNS configuration of WebGuard is correct, whether there remains IPS is wrong二手設備買賣 or no longer in use.
4.Please check if the firewall of source website blocked the IPs of WebGuard nodes. see the FAQ for details
-If the firewall of ISP blocked ,the IPs of WebGuard nodes. please contact the ISP to unlock and add the IP segments to whitelist.
-If the firewall of server (safedog, etc.) blocked the IPs of WebGuard nodes, please add the IP segments to the whitelist of the server firewall.
-if you have not any firewall on server, please contact with your IDC, and add the IP segments of WebGuard to the whitelist of the IDC
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