Note that with the data security in place, most reports can be made accessible on the portal for all users and they will automatically limit the data displayed to that allowed by the user’s data security. Because many servers are normally required to implement the portal, the analysis presentation, and the data cubes, an authentication technology is normally required to propagate the user’s authentication securely to all servers without requesting authentication for each server separately. Single Sign-on or Kerberos technology is thus normally required as part of the user authentication process in a modern Media BI Analysis system.