Every new vm I've ever fired up of Nethserver has used this;
User name: root
Default password: Nethesis,1234
http://docs.nethserver.org/en/latest/installation.html#unattended-mode
Every new vm I've ever fired up of Nethserver has used this;
User name: root
Default password: Nethesis,1234
http://docs.nethserver.org/en/latest/installation.html#unattended-mode