502

使用安域防护后🎽，为什么会出现502、快照👝？

原因可能有以下几点：

Using Focus Shield protection, why there will be 502, snapshots?

The reason may have the following:

1.The source station downtime, intermittent card is slow.Please check the source station the survival of the state.How to check the source station status(hyperlink to a certain help)
2.The source station slow response timeout for 30 seconds.More than 30 seconds did not respond to requests will be Focus Shield disconnect, according to 502.
3.Please check stood Focus Shield DNS Settings configuration of the source IP is correct, whether also retained the wrong, has not use server IP.
4.Please check whether the source station firewall intercept Focus Shield node IP see the FAQ for details

-if IP firewall intercept Focus Shield node space service provider, please contact the quotient space unlock and add white IP.
-if the server IP firewall (security dogs, etc.) interceptor Focus Shield node, please add Focus Shield IP segment to the server firewall in the white list.
-if you have not any firewall configuration server, please contact with your room, firewalls add Focus Shield IP segment to the room in the white list

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