Hello, I am trying kerberos authentication. I configured the radiusd.conf Auth-Type Kerberos { krb5 } .... krb5 { keytab = /etc/krb5.keytab #service_principal = } than in users DEFAULT Auth-Type := Kerberos But I am unable to succesfully authenticate and I get this error: rlm_krb5: Attribute "User-Password" is required for authentication. How could I Solve this problem? I would like the authentication via 802.1x to point to my kerberos server instead of a local radius users file authentication (this indeed works with EAP-TTLS). What am I doing wrong ? should I instead use PAM module and configure PAM to authenticate using kerberos ? thanks very much Rick