RHEL 8 TigerVNC Server — Cannot connect

[Randall Beck]

Hi,

I installed TigerVNC (tigervnc-server-1.10.1-9.el8_3.x86_64 plus related RPMs) on a RHEL 8 virtual machine as a systemd service. systemctl status vncserver@\:1.service shows it is active and running with no error or warning messages.

And I can see TigerVNC is LISTENing on the expected ports:

netstat -tlnp | grep vnc

tcp        0      0 127.0.0.1:5901          0.0.0.0:*               LISTEN      1441/Xvnc           

tcp6       0      0 ::1:5901                :::*                    LISTEN      1441/Xvnc    

However, when I try to connect on my MacBook using VNC Viewer 6.19.1115, I always see the message:

"Timed out waiting for a response from the computer."

I do not see any corresponding error messages in /var/log/message or /var/log/secure.

How can I debug this, and are there any TigerVNC logs I can view?

Thanks,

--Randy

[Jim McNamara]

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Randall-

If you are using virtualbox you might consider RDP.

I am having success with win 10 and fedora guest in virtualbox using remmina. 

Robo-loki

[Pierre Ossman]

On 03/02/2021 19:17, Randall Beck wrote:
> Hi,
>
> I installed TigerVNC (tigervnc-server-1.10.1-9.el8_3.x86_64 plus related

> RPMs) on a RHEL 8 virtual machine as a *systemd service. systemctl status
> vncserver@\:1.service* shows it is active and running with no error or

> warning messages.
>
> And I can see TigerVNC is LISTENing on the expected ports:
> netstat -tlnp | grep vnc
> tcp 0 0 127.0.0.1:5901 0.0.0.0:* LISTEN
> 1441/Xvnc
> tcp6 0 0 ::1:5901 :::* LISTEN
> 1441/Xvnc
>
> However, when I try to connect on my MacBook using VNC Viewer 6.19.1115, I
> always see the message:
>
> "Timed out waiting for a response from the computer."
>
> I do not see any corresponding error messages in /var/log/message or
> /var/log/secure.
>
> How can I debug this, and are there any TigerVNC logs I can view?
>

How are you connecting? The output from netstat shows that the server is
only listening on localhost, so it won't accept connections from any
other machine. This is a common configuration to force usage of an SSH
tunnel to reach the server.

Regards
--
Pierre Ossman Software Development
Cendio AB https://cendio.com
Teknikringen 8 https://twitter.com/ThinLinc
583 30 Linköping https://facebook.com/ThinLinc
Phone: +46-13-214600

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