core/cdemu-daemon/cdemud-dbus.conf

<!DOCTYPE busconfig PUBLIC 
    "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
    "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">

<busconfig>
    <!-- Only root can own the CDEMUD_Daemon service on bus -->
    <policy user="root">
        <allow own="net.sf.cdemu.CDEMUD_Daemon"/>
    </policy>
    <policy group="root">
        <allow own="net.sf.cdemu.CDEMUD_Daemon"/>
    </policy>
    
    <!-- Allow users at the console to invoke methods on the interface -->
    <policy at_console="true">
        <allow send_destination="net.sf.cdemu.CDEMUD_Daemon"/>
    </policy>

    <!-- Allow users in the 'cdemu' group to invoke methods on the interface -->
    <policy group="cdemu">
        <allow send_destination="net.sf.cdemu.CDEMUD_Daemon"/>
    </policy>
</busconfig>