CentOS 7: Connect to GNOME desktop environment via XRDP

Install XRDP.

$ sudo yum install -y epel-release
$ sudo yum install -y xrdp
$ sudo systemctl enable xrdp
$ sudo systemctl start xrdp

Open XRDP port.

$ sudo firewall-cmd --add-port=3389/tcp --permanent
$ sudo firewall-cmd --reload

The rdesktop connection is as the following.