CSF Firewall Host error / Error 522 Connection timed out



:

error
Host Error
!!
.

Typically this error comes up because of a firewall setting blocking Cloudflare. In some cases the firewall sees the same IP (Cloudflares) too much, and further connections are blocked. The fix is to whitelist Cloudflares IP at the host/firewall.

:

CSF whitelist
!!!
15

:
173.245.48.0/20 # cloudflare.com
103.21.244.0/22 # cloudflare.com
103.22.200.0/22 # cloudflare.com
103.31.4.0/22 # cloudflare.com
141.101.64.0/18 # cloudflare.com
108.162.192.0/18 # cloudflare.com
190.93.240.0/20 # cloudflare.com
188.114.96.0/20 # cloudflare.com
197.234.240.0/22 # cloudflare.com
198.41.128.0/17 # cloudflare.com
162.158.0.0/15 # cloudflare.com
104.16.0.0/13 # cloudflare.com
104.24.0.0/14 # cloudflare.com
172.64.0.0/13 # cloudflare.com
131.0.72.0/22 # cloudflare.com
15 14


If you are seeing 522 errors in certain locations only, it means you likely forgot to whitelist one of our ranges that corresponds to these locations, so double check to ensure all our IPs are whitelisted appropriately.

:
https://www.cloudflare.com/ips/
https://community.cloudflare.com/t/c...imed-out/42325
https://community.cloudflare.com/t/c...-is-down/42461