xrdp port 3389 problem

[vvcat]

Hi,

I am using Centos 7, install xrdp and tigervnc are not complicated, I have followed below steps which get them from internet.

#rpm -ivh https://dl.fedoraproject.org/pub/epel/e ... noarch.rpm

#yum install xrdp tigervnc-server

#systemctl start xrdp
#systemctl enable xrdp

firewall-cmd --permanent --zone=public --add-port=3389/tcp
firewall-cmd --reload

but when I type "netstat -antup | grep xrdp", no 3389 port info. to be shown on the screen, even I grep 3389 for netstat command, no 3389 port to be displayed, of course, I have used Windows 7 remote desktop for above test, the result is negative.

During above package installation, no any error occurred.

Can someone let me know what is going on, appreciated if some experts help, many thanks.