CloudFlare Error 522 - How to Solve?

harrygreen90

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Joined
Dec 17, 2013
Messages
349
Points
18
Hi everyone,
I am getting Error 522 from CloudFlare, I thought it came from my hosting problem but tried to login into web hosting with real IP address and it still worked. I thought it supposed that the problem from CloudFlare. I installed csf firewall and it is safe to add all ips of cloud flare in allow list of csf firewall to fix this error?
 

virtubox

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Aug 20, 2016
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74
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The possible errors are listed here : [URLnofo]https://support.cloudflare.com/hc/en-us/articles/200171906-Error-522-Connection-timed-out[/URLnofo]

If you are using a firewall, yes you have to allow all Cloudflare IPs. It's probably this error or a very similar error.
 

UWH-David

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Jan 18, 2016
Messages
29
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Absolutely. You can whitelist/auto-allow the CloudFlare network along with any modsec vendors in your CSF configuration with no problems.

CloudFlare IPv4 list as of 10/3/16:

IPv4

103.21.244.0/22
103.22.200.0/22
103.31.4.0/22
104.16.0.0/12
108.162.192.0/18
131.0.72.0/22
141.101.64.0/18
162.158.0.0/15
172.64.0.0/13
173.245.48.0/20
188.114.96.0/20
190.93.240.0/20
197.234.240.0/22
198.41.128.0/17
199.27.128.0/21
 
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