I had raised this issue as part of a case and was encouraged to post here as well.
As an MSP using SolarWInds EOC, customers have asked that we be able to manage their installation via a web server in their DMZ (as opposed to reaching directly into their internal network).
Right now, we can link to a DMZ-hosted additional web server for the NPM integration, but we still need to link to the main Orion server for the SWIS bits (tcp/17777, 17778).
If the entire integration could be via a DMZ-hosted additional web server, that would be more secure and give us more options in integrating with larger customers.