We are currently running Portal 7. I've enabled single sign on via logon tickets from portal to our backend ECC 6.0 and CRM 5.0 systems and its working fine. For demoing to clients we've employed the Apache webserver for reverse proxy. This reverse proxy server is located in the DMZ, on a domain of its on. I can access the portal fine through the reverse proxy but now the single sign on to our backend ECC and CRM systems doesn't work. I know the issue lies with the difference in the domain.
Has anyone come accross an issue such as this and can lend me some help?