We are setting up a segregated network for a vendor who will be coming in to work on a project. They plan to have their own domain with no trusts to ours, and their own Citrix servers, sitting behind a firewall. I have two questions. 1. Can I share licenses between farms in untrusted domains? 2. What ports must I open on the firewall to accommodate license sharing? (Is it just the port defined in the CMC, or is there more to it?)