We use Active Directory.
Win10 Client computer is a member of the domain.
RHEL7 computer is also joined to domain.
RHEL7 computer is GSSAPI capable
Win10 Client computer attempts to connect to RHEL7 computer using SSH "root@{rhel7_fqdn}" via GUI.
The ksar java text window prompts "kerberos username [{windows.userid}]" and does not perform the ssh login as per the credentials in the connection dialog.