how to connect remote desktop (remmina) with azure VM?

Question

I have been trying for so many times to connect my remote desktop with azure VM, I already deployed VM for MATLAB, I want to work on Azure VM through remote desktop, but unable to connect, I am using remmina remote desktop with RDP protocol, port 3389 is also allowed in both VM and my Ubuntu system, firewall also allows these ports, I have checked every possible solution to connect my remote desktop with Azure VM but every time I got an error message the connecting to sesame IP 127.0.0.1 port 3350, login failed, even i tried on Windows, got same error message. I am stuck at this point, please suggest any possible solution, i tried all solutions from internet.

Thanks in advance.

Answer 1

Hello @zainab rehman

xrdp and xrdp-sesman use TCP port 3350 on the loopback interface (127.0.0.1) to communicate. From above it looks like xrdp-sesman is listening on 3350, but xrdp is for some reason unable to connect to it.

You need a couple of things to check:

1. In xrdp.ini there is a setting for SSL protocols. For connection from Windows 10, I suggest
   ssl_protocols=TLSv1.2, TLSv1.3
2. Check if you have a file /etc/X11/Xwrapper.config containing a line.
   allowed_users = anybody
3. Try to delete file
   /etc/pam.d/xrdp-sesman

I would suggest testing the remote machine’s port you are trying to connect to
telnet <remore-machine-name-or-IP-address> 3389
Also you can use following commands for troubleshooting. The first command checks the processes are using the same network stack, the second looks for processes listening on port 3350, and the third probes port 3350 to see if it's open.

sudo ps -e -o pid,netns,command | grep xrdp sudo ss -alp 'sport = 3350' sudo nmap -p 3350 127.0.0.1

https://github.com/neutrinolabs/xrdp/issues/1777
https://github.com/neutrinolabs/xrdp/issues/2336