i have recently set up Data Archive and Asset Framework on our Laboratory, and also configured an interface which is accessing data of a phasor measurement unit and sends them to the PI DA server. Which kind of mappings and trusts should i create in order to have the maximum security? I have created a mapping for the computer where the interface is hosted and a trust for the application which is sending the data to the server (openPDC). The interface node will host in the future also other interfaces. Is it better to create an identity, mapping and trust for the whole interface node, or for each interface application individually?