The Logon Page works with Standard and AuthSession security. It allows the display of a custom logon form to gain access to the system.
With Standard security, when LogonPage is blank, the system uses its own built-in logon form, which is rdLogon.aspx. To create a custom form, copy rdLogon.aspx to your own file, make appropriate modifications, and specify the new logon form in the Logon Page.
With AuthSession security, when LogonPage is blank, an error is thrown. Instead, provide the URL to the calling application's logon URL.