'How to use 443 port for xrdp in ubuntu server?

I tried to use 443 for xrdp service on ubuntu.

I updated /etc/xrdp/xrdp.ini to set port as 443 and restarted the service. But the service is unable to start, showing this error message. enter image description here

I checked the ports using netstat but could not find any process that is using 443 port. Is there any way I can use 443 port for rdp service?

Thank you.

ubuntubackendrdp


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