FM / system.d

/usr/share/dbus-1/system.d

Name	Size	Mode	Actions
io.netplan.Netplan.conf	607	0644	edit dl rm
org.freedesktop.bolt.conf	1122	0644	edit dl rm
org.freedesktop.fwupd.conf	1043	0644	edit dl rm
org.freedesktop.hostname1.conf	994	0644	edit dl rm
org.freedesktop.locale1.conf	984	0644	edit dl rm
org.freedesktop.login1.conf	16619	0644	edit dl rm
org.freedesktop.ModemManager1.conf	15056	0644	edit dl rm
org.freedesktop.network1.conf	954	0644	edit dl rm
org.freedesktop.PackageKit.conf	1331	0644	edit dl rm
org.freedesktop.PolicyKit1.conf	638	0644	edit dl rm
org.freedesktop.resolve1.conf	954	0644	edit dl rm
org.freedesktop.systemd1.conf	21419	0644	edit dl rm
org.freedesktop.timedate1.conf	994	0644	edit dl rm
org.freedesktop.UDisks2.conf	525	0644	edit dl rm
snapd.system-services.conf	144	0644	edit dl rm

Edit: /usr/share/dbus-1/system.d/org.freedesktop.ModemManager1.conf (15056B)

<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
  <policy context="default">
    <deny send_destination="org.freedesktop.ModemManager1"
          send_type="method_call"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.DBus.Introspectable"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1"
           send_member="ScanDevices"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem"
           send_member="ListBearers"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Firmware"
           send_member="List"/>
    <allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Firmware"
           send_member="Select"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Simple"
           send_member="GetStatus"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Sim"
           send_member="SendPin"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Bearer"
           send_member="Connect"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Modem3gpp.Ussd"
           send_member="Initiate"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Location"
           send_member="GetLocation"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Messaging"
           send_member="List"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Messaging"
           send_member="Create"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Sms"
           send_member="Store"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Voice"
           send_member="ListCalls"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Voice"
           send_member="CreateCall"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Call"
           send_member="Start"/>

<allow send_destination="org.freedesktop.ModemManager1"
           send_interface="org.freedesktop.ModemManager1.Modem.Time"
           send_member="GetNetworkTime"/>

</policy>

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