Defining proxy server information for external web services in Spectrum

Product Feature: Installation / Upgrade
Is it possible to set a proxy server in Spectrum (host, port, user, pwd)? 
There is not currently a way in Spectrum™ Technology Platform to define proxy server information for external web services.  There is an open enhancement request CDQE-14947 in JIRA for this feature.

In the meantime, I know we have an OnDemand customer who has a unique set up that this client might be able to implement.  The OnDemand user has defined a specific IP address in their DNS (I’m assuming) that is redirected to our OnDemand site.  So all the client applications connect to the internal IP address, but behind the scenes that IP is routed outside the company to our host.  Not sure if that would be an acceptable workaround for your client, but it’s something to think about.
UPDATED:  February 3, 2020