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Please provide the IP address(es) that will be connecting to the SFTP/FTPS server so that we can whitelist those IP addresses against the client/customer’s user.
FTPS - Passive Mode Ports
Connecting to the FTPS service requires an additional port range to be accessible. Connecting to the FTPS service requires that outbound connections on ports 21
and the range 8192
to 8200
are allowed through any firewalls to the FTPS service address.