Our Portal is not accessible from outside the organization's domain. Normally this is fine, except I'd like to use Collector for the remote collection of data. Networks and network security are not my bailiwick. What do I need to do to make the server visible to devices (just these devices?) with Collector? If this something that isn't something that can be changed just within the ArcGIS Enterprise software, what are the questions I need to bring to our IT department to better understand the situation? Can this be done without making our system "public"?