Thanks all, I’ve found the problem it was my ISP router that was blocking it. --> solved.

Thanks @InnerScientist@lemmy.world & @ark3@lemmy.dbzer0.com

Actually I don’t think it’s the firewall, because all the other programs, protocol are working fine. I’ve tried with chrony too but I get

No suitable source for synchronisation

May be because the client is a VM ?

Thanks @cypherpunks@lemmy.ml But I rather want something that run locally.

Thanks @HelloRoot@lemy.lol But I stop with raspberry pi…

But I found https://wammu.eu/python-gammu/ I just have to foud out if it could work with a USB-GSM-Modem, dongle and it should do the trick.

Thanks @testman@lemmy.ml

StackOverflow says that it can be done by editing xrdp.ini

This post date from 2013 O_o

[Xorg]
name=Xorg
lib=libxup.so
username=ask
password=ask
ip=127.0.0.1
port=-1
code=20

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

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

[neutrinordp-any]
name=neutrinordp-any
lib=libxrdpneutrinordp.so
ip=ask
port=ask3389
username=ask
password=ask

so I don’t have [xrdp1]

To summarize:

Edit the xrdp.ini file set port = ask connect from the remote machine, and at login if you have no existing session, specify port -1 to resume a session enter the default of 5910

I believe this i working if the previous session was already made remotely… ?otherwise how I get the port of the local X session ?

Is there a specific reason for choosing RDP?\

rdp is usefull if you have windows client client, but that it’s.

And RustDesk is also a good, more advanced alternative.

great piece of software, but too heavy in my case, I want something simple, that just do one thing good. I don’t need

• End-to-end encryption
• File transfer
• Chat features

Thank you all for your input’s !! 🤗

I’ve put the files on a USB flash drive formatted as a classic FAT. Then I mounted it in the VM (I confirm no need the VMware-tools for that :)