Connection time out trying to access NoMachine (Ubuntu desktop)

[afunworm]

I have been using NoMachine from Windows to Windows without any problem. I can even access my computer over the internet.

I just got a new computer with Ubuntu Desktop installed. When I tried to connect to it from NoMachine (Windows), I got a connection timeout message, on port 4000.

Is there anything I should check (and possibly if you can please guide me on how to check) to make this work?

Thank you.

[Britgirl]

In NoMachine version 8 (for new installations), UPnP/NAT-PMP is disabled by default in the Free Edition. To get access to your computer over the Internet, NoMachine’s UPnP/NAT-PMP port mapping must be enabled by hand (‘Server settings -> Ports’ -> Select the service and click on Configure); or alternatively, your router can be configured with the appropriate port-forwarding rule.

More about this here: https://www.nomachine.com/AR10T01175

Does this help?

 

[afunworm]

Hi.

Thank you for your response. I understand how to make it work over the internet. I think the problem I am having is that I can’t even connect to my Ubuntu NoMachine from any other NoMachine (on Windows or Android) within the LAN. It keeps timing out. I am not sure if there’s a settings on Ubuntu that blocks the incoming connection. Firewall-wise, I have unblocked port 4000 for both incoming and outgoing traffic.

Is there anything else I should check?

Thank you.

[Britgirl]

Can you tell us what IP address is being used? I.e you are definitely using the LAN’s IP.

Is it a virtual machine perhaps?

The logs would also be useful from the server. To gather those up, please follow the instructions here:

https://kb.nomachine.com/DT07S00243

You can attach them here or submit to forum[at]nomachine[dot]com.

[afunworm]

Hello.

IP address of the target is 192.168.86.50:4000 (the internal IP). I checked the configuration for that machine on the list screen. NoMachine on my Windows discovered that NoMachine on Ubuntu in the same network automatically. It just cannot connect to it.

I have attached the logs here. I hope it helps.

Attachments:

1. session.txt

[Britgirl]

Check the IP addresses for that connection by going to ‘Edit connection’. Then select an alternative one if there are multiple ones available. A screenshot showing what I mean is and my explanation https://forum.nomachine.com/topic/how-to-make-nomachine-update-target-computer-ips#post-39467

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