IGEL Linux v5 IGEL Linux v5 How-Tos Passthrough Authentication Current: Session Configuration PDF Download PDF Download page Session Configuration. Current page Include child pages All pages Session Configuration For single sign-on with sessions, two methods are available:Kerberos Passthrough: Uses real Kerberos authentication with clients that support Kerberos.Passthrough: Uses cached user name and password from local log-on for authentication. Currently, real Kerberos authentication is only available in Citrix sessions. In the following sections, you can find how to activate passthrough authentication in sessions that support it: Citrix Legacy ICA Sessions Citrix Storefront/Web Interface RDP Horizon Client Parallels 2x Client ×