Babok

[Babok]

Hi Tor,

Thanks for the feedback.

The NoMachine’s community is amazing ! Keep up on the good work.

Maybe could you explain us:

Whenever server status display “Server is not running”, NoMachine’s services (nxplayer.bin and nxclient.bin) open port and listen incoming connections.

If we want just to use it as a client, why do NoMachine have to listen connection ?

[Babok]

Yes this is a misspeaking, you are right client window is maximized.

[Babok]

Also if you closed both by clicking on close button (NoMachine player then the remote desktop session):

The nx tray icon stay on…..

 

[Babok]

I found by myself, here how:

You need to modify permissions  in ~/.nx/config/authorized.crt

Before nx was able to read this file with owner ( root root ) and permissions set to 0600

Now with this latest update you have to modify the owner with the user profile and permissions set to 0600

 

[Babok]

The free version is installed on linux debian buster 10.7

Everything was working on 6.11.2_1 with authentification by NX-private-key.

The client is updated also on Windows 10. When I try to connect I get the error message: Authenfication failed

[Babok]

Hey,

I upgraded it from 6.11.2_1 and now i cannot connect anymore.

Here the error message on nxerror.log file:

“main: WARNING! User ‘xxxx’ unable to read file.”

 

I would appreciate any help

[Babok]

Here some feedback:

The server was ATOM 2 cores 2 threads.

I had to edit on server side node.cfg to test each modes: (h264, vp8,  mjpeg) then i uncommented EnableDisplayServerVideoCodec 0, DisplayServerThreads auto, DisplayEncoderThreads auto.

Lowering the resolution on nomachine help a lot if you stay on h264.

In my configuration, vp8 encoder is lighter and hold up fairly well, you don’t see the processes nxcodec.bin .

I tested on a better processor and no issue at all, so yes h264 encoding need a lot of cpu usage.

And about firefox-esr, it still ask a lot of cpu when scrolling but it s not about nomachine.

 

[Babok]

Indeed, pressing I and 1 on top command, irxi mode off help to get a better view.

So I consider cpu usage is not so high as i thought on 8 cores. Resolution client side is 5120×3200

[Babok]

Here some files

I have to say the processus Web Content take between 70-100% cpu, no extension enabled.

And I am not using the virtual display but the default option: physical display

 

 

Attachments:

1. statistics-12272019-14.25.12.txt
2. setting.txt

[Babok]

server: Intel(R) Atom(TM) CPU  C2750  @ 2.40GHz

desktop environnement: xfce without lightdm.

Do you think the cpu’s server cannot handle encoding h264 and could be the reason of high cpu on on a mac client ?

 

I have the same issue on windows 10 too..

[Babok]

Or maybe this is the good answer:

What is the difference between physical desktop and virtual desktop? https://www.nomachine.com/AR10K00700

[Babok]

Well got the same question, I expect at this answer:

– physical display is when you have a real screen (desktop)

-virtual screen is when you have no real screen (headless server)

 

maybe someone could bring more details on this feature and which one to choose for desktop or headless server.

[Babok]

I found my answer on server.cfg;

Modify the field:

#AcceptedAuthenticationMethods all

To:

AcceptedAuthenticationMethods NX-private-key

[Babok]

Here some good news:

– On my ssh server, i created private and public keys, and tested until it works.

– After that, i tried Reza’s recommendation, and it works well ! i can connect by using NX protocol with SSH keys on free version and without using any ssh tunnel.

Maybe I will try with SSL Certificate File and SSL Certificate Key….

But here my last questions

– Can I only allow key authentification on nxserver as on ssh server ? I want to disable password authentication.

– Do you have any jail config and jail filter for NoMachine to use with fail2ban ? I would like to protect my server against attacks.

Thanks for your help.

[Babok]

Thanks for the link, i will try to use ssh keys with your link.

I read this article https://www.nomachine.com/AR10M00866 but doesn’t work either with ssl keys with the free version.

I managed to set a ssh tunnel with putty client (windows port 4003) to linux server (port 4000). And i can connect to NX server with this connection settings:

connection settings: Protocol: NX Host: localhost Port: 4003 Authentication method: Password Username: user Password: ***

The issue is keys authentification (ssh/ssl)

[Author]

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