IGEL OS 11.03.500 IGEL OS Articles Miscellaneous Passthrough Authentication Current: Basic configuration PDF Download PDF Download page Basic configuration. Current page Include child pages All pages Basic configuration Your client configuration must fulfill certain conditions before you can enable passthrough authentication.Set the time correctly on all involved hosts and clients.Configure the domain.Activate login to the Active Directory domain. When activating the Smartcard login method, some additional configuration may be necessary. ×