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Hi,
Please make sure the FTP target security group is allowed FTP port (e.g. 20 or 21 port) if the target is ec2 or which has a security group.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/security-group-rules-reference.html#sg-rules-ping https://docs.aws.amazon.com/vpc/latest/userguide/security-group-rules.html