linux-gru:/home/gdev/iSOFT2/xrdp # vi /etc/xrdp/xrdp.ini

[globals]
bitmap_cache=yes
bitmap_compression=yes
port=3389
crypt_level=low
channel_code=1
#black=000000
#grey=d6d3ce
#dark_grey=808080
#blue=08246b
#dark_blue=08246b
#white=ffffff
#red=ff0000
#green=00ff00
#background=626c72

[xrdp6]
name=freerdp-any
lib=libxrdpfreerdp.so
ip=ask
port=ask3389

[xrdp1]
name=sesman-Xvnc
lib=libvnc.so
username=ask
password=ask
ip=127.0.0.1
port=-1

[xrdp2]
name=console
lib=libvnc.so
ip=127.0.0.1
port=5900
username=na
password=ask

[xrdp3]
name=vnc-any
lib=libvnc.so
ip=ask
port=ask5900
username=na
password=ask

[xrdp4]
name=sesman-any
lib=libvnc.so
ip=ask
port=-1
username=ask
password=ask

[xrdp5]
name=rdp-any
lib=librdp.so
ip=ask
port=ask3389

[xrdp7]
name=sesman-X11rdp
lib=libxup.so
username=ask
password=ask
ip=127.0.0.1
port=-1

linux-gru:/home/gdev/iSOFT2/xrdp # /etc/xrdp/startwm.sh start
/usr/bin/gnome-session
Starting gnome-session
gnome-session[12726]: WARNING: Could not make bus activated clients aware of DISPLAY=:0.0 environment variable: Did not receive a reply. 
Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the 
network connection was broken.
gnome-session[12726]: WARNING: Could not make bus activated clients aware of GNOME_DESKTOP_SESSION_ID=this-is-deprecated environment variable:
 Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply
 timeout expired, or the network connection was broken.
gnome-session[12726]: WARNING: Could not make bus activated clients aware of SESSION_MANAGER=local/linux-gru:@/tmp/.ICE-unix/12726,
unix/linux-gru:/tmp/.ICE-unix/12726 environment variable: Did not receive a reply. Possible causes include: the remote application did not send a reply, the 
message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
gnome-session[12726]: Gtk-CRITICAL: IA__gtk_main_quit: assertion `main_loops != NULL' failed
gnome-session[12726]: CRITICAL: dbus_g_proxy_new_for_name: assertion `connection != NULL' failed
gnome-session[12726]: Gtk-CRITICAL: IA__gtk_main_quit: assertion `main_loops != NULL' failed
gnome-session[12726]: GLib-GObject-CRITICAL: g_object_unref: assertion `G_IS_OBJECT (object)' failed
gnome-session[12726]: CRITICAL: error getting session bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the 
message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
gnome-session[12726]: WARNING: Unable to register presence with session bus
gnome-session[12726]: CRITICAL: dbus_g_proxy_new_for_name: assertion `connection != NULL' failed
**
GLib-GIO:ERROR:gdbusconnection.c:2279:initable_init: assertion failed: (connection->initialization_error == NULL)

Step 2: Open the firewall
GoTo Yast's firewall module --> Allowed Services --> Select --> Remote Desktop Protocol --> Add.