What I was trying to say is I am not sure Warp handles FTP too and doesnt simply bypass the VPN servers. If it it does, the question is if that address is used for the VPN too.
I think , this ip is in CF’s whitelist IP Ranges , but the IP connect my FTP , I think it’s unsafe .
I think CF must confirm all whitelist ip running CDN service only .
Again, that is something for you to clarify with support. Nobody here can tell you what the case is.
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And what of the next ones. And the next ones? Their will be more and most not CloudFlare’s if you have :21 exposed to the INTERNET. If you want it that way, you want it that way, but you cannot expect that you’ll not be PORT SCANNED. And saying there’s no difference between FTP which is straight out open access for everyone online and SFTP which requires a pub/priv key scenario much like SSH uses (or a password if security is of no concern to you which it doesn’t seem to be), well, saying there is no difference between the two and actually believing it … speaking the truth here may get this flagged so I’ll let others come to their own conclusions.