.. _appliance_root_user: ============================ Root user and appadmin user ============================ .. index:: Root user, appadmin, ssh The users ``root`` and ``appadmin`` are system users known in the ``/etc/passwd`` file of the underlying Linux operating system. These users can be used to login the Appliance Management UI. While the user ``root`` can be used to login to the machine via console or SSH, the user ``appadmin`` is only allowed to login to the Management UI. Therefore the user ``root`` can change the password of the user ``appadmin`` but the user ``appadmin`` can not change the password of the user root (except he can provide the correct root password). Both the users ``root`` and ``appadmin`` are allowed to change the passwords of all the LinOTP token administrators. .. figure:: images/administrators.png :width: 100%