For example, in some cases, Essbase Integration Services Console is used on a client computer that is outside the network firewall, and the console requires access to Integration Server and Essbase Server, which are located inside the network firewall. In these cases, you must log on to Essbase Server with a name that both the client system and Integration Server can use to communicate with Essbase Server.
Problems arise when you attempt to log on using the external IP address of the computer running Essbase Server. Integration Server cannot use the external IP address to communicate with the computer running Essbase Server because both Essbase Server and Integration Server are inside the firewall. Administrators can solve this problem by defining an alias for the Essbase Server computer that is usable from both sides of the firewall.