File Transfer from SAP to Non SAP system through SFTP

Hi All,

I am new to SAP BASIS and I have a requirement to propose a solution regarding both inbound and outbound processing of IDOC from ECC system to a non ECC system by using SFTP as the file transfer methodology. So is there any specific way this can be done and what requirements will be there with respect to this solution ? Image may be NSFW.
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