When Authentication Level-based authentication is initiated, the Authentication Service displays a login page with a menu containing the authentication modules that have authentication levels equal to or greater then the value specified in the login URL's parameter. Users can select a module from the presented list. Once the user selects a module, the remaining process is based on Module Authentication. (See Module Authentication.)
To initiate Authentication Level-based authentication, append the authlevel=auth-level-value parameter to the base login URL as in:
Additionally, you can append the realm=realm-name parameter to the base login URL as in:
If there is no defined realm parameter, the realm will be determined from the server host and domain specified in the login URL.
All modules whose authentication level is larger or equal to auth-level-value will be displayed in an authentication menu. After the authentication menu with the relevant list of modules is displayed, the user must choose one with which to authenticate. If only one matching module is found, then the login page for that authentication module will be directly displayed.