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I can't connect to the KDE GUI installed on my Debian server, using NoMachine. Connection over SSH (Both through PuTTy as X forwarding) works just fine, but somehow I can't figure out how to connect using NoMachine and the NX protocol.

I installed the NoMachine server on my Debian server (nomachine_5.1.54_1_amd64.deb), which seems to work fine. It listens on port 4000. I disabled the firewall on the server.

Then I installed NoMachine on my windows system and tried to connect to the server, using the same IP address as with the ssh connection, and the login credentials I use to login on the server.

I approach the server from another network, using a VPN connection and the HTTP proxy for the network connection.

I tried the tips provided online, but can't get it to work. I still get the error message:

Could not connect to the server.
Error is 138: Connection timed out

Help would be highly appreciated!

Dendrobates
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1 Answers1

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You should use the same IP address that is shown in the Welcome GUI like the attached image (taken from the nomachine website) nomachine welcome gui showing where to connect

Richard
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  • Thx for your answer @Richard. Is this IP address different than the one I use for the SSH connection? How can I obtain the external IP address within linux, some command or config file? – Dendrobates Nov 21 '16 at 18:47
  • By the way: no ip address is shown in the GUI on the client side. – Dendrobates Nov 21 '16 at 18:55