Last year we had a client surprise us by deciding to outsource their warehouse management system. We had 6 months to write import/export routines before they went live. We are sending files to and from an SFTP server. Things work pretty well right now but now they are asking if there is a better way. In the remote warehouse is Oracle running SX so there is no way to have a direct connection between the two systems. What have others done to create a secure and stable connection between two systems that have nothing in common?