digraph G {
    node [ shape=box ]

    local_browser [ label="Local Browser" ];
    desktop_ungleich [ label="ungleich Desktop\n(Guacamole)" ];
    vm [ label="Dedicated VM" ];
    mydesktop [ label="My Desktop in a VM" ];
    mobile_phone [ label="My phone" ];

    local_browser->desktop_ungleich->vm->mydesktop;
    desktop_ungleich->mobile_phone [ label="2FA" ];



}