Portal 7.3 and SAP Sourcing Portal integration

Hello all,

I have a unique scenario that requires some assistance.

I am working at a very secure site..

I am using SAP EP 7.3 as a consumer portal along with SAP Sourcing Portal. We have 2 portal systems, one for business users and one externally for customers.

Internally

I have created a URL iView to the sourcing portal to render sourcing portal content internally this works fine with no issue

Externally

I have created the same URL iView pointing to the Sourcing Portal but I am having significant issues

I am dealing with multiple firewalls so the URL request that’s being sent to the sourcing Portal from the EP is getting lost due to the loadbalancer and firewall not passing thru the proper URL

We can not get SSO to work externally either

My question is, is there another way to integrate the sourcing portal to the EP without using a URL iView?

I’ve mentioned application integration iViews but do not see that as a template.  Any help would be appreciated.