Trust all realms
The inbound trust is required to validate LTPA tokens that contain a foreign realm. The outbound trust is required to send the credential tokens to the trusted realms. For example, if an application using realmA needs to communicate using LTPA with an application using realmB, realmA should have realmB in its outbound trust list and realmB should have realmA in its inbound trust list.
The inbound trust is required to validate LTPA tokens that contain a foreign realm. The outbound trust is required to send the credential tokens to the trusted realms. For example, if an application using realmA needs to communicate using LTPA with an application using realmB, realmA should have realmB in its outbound trust list and realmB should have realmA in its inbound trust list.