How to create SFTP connections with a remote server?

Hi, I am trying to use SFTP to push Historical Data Record (HDR) to a remote server. The HDR document says it is required to load the public key to the SBC. I did so, but the HDR still could not be pushed to the remote server. Is there anything else I have missed?

 

Below is the SBC config:

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        push-receiver
            address                        10.203.1.2
            user-name                      samba
            password                       ********
            data-store                     /samba/users/chris/sbc_monitoring/hdr
            protocol                       sftp

        group-settings
            group-name                     session-realm
            sample-interval                2
            boot-state                     enabled
            start-time                     now
            end-time                       never

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Thanks in advance,

 

Chris