@jarens I don't know what whitelist mean in this content, SFTP is based on SSH v2 protocol and it work with host keys but NetSuite is the one doing the connection, you need their host key, they don't need yours... if they are thinking about public keys to setup a connection without username and password SSH style I don't think is possible with NetSuite SFTP module but I may be wrong since I did not play enough with this module yet.