>
> >>> On 2020-02-16 20:44, Patrick Dupre wrote:
> >>>> I followed both options:
> >>>> vncviewer -via euripide
> >>> Shouldn't the format of the command be something like...
> >>> vncviewer SERVERNAME:1 -via localhost
> >> No: the -via option of vncviewer is a short way to setup an ssh tunnel
> >> to the SERVER running Xvnc (vncserver).
>
> > Well, if I do as you say it fails for me in the same way as it fails
> > for Patrick.
>
> Weird. Do you have also:
>
> ssh: connect to host ... port 3022: Connection refused
ssh euripide.u-bourgogne.fr:3022
ssh: Could not resolve hostname euripide.u-bourgogne.fr:3022: Name or service not known
> > If I use the format I show, it works just fine.
>
> With "vncviewer SERVERNAME:1 -via localhost" you are first opening an
> ssh tunnel to localhost. This is useless. I guess you can connect
> directly with: vncviewer SERVERNAME:1
>
> A way to see how vncviewer setup the ssh tunnel:
>
> strace -s 1000 -f -e execve vncviewer SERVERNAM:1 -via localhost \
> |& grep 'execve("/usr/bin/ssh"'
strace -s 1000 -f -e execve vncviewer euripide.u-bourgogne.fr:1 -via localhost |& grep 'execve("/usr/bin/ssh"'
[pid 17812] execve("/usr/bin/ssh", ["/usr/bin/ssh", "-f", "-L", "42485:euripide.u-bourgogne.fr:5901", "localhost", "sleep", "20"], 0x55bf48f49930 /* 96 vars */) = 0
pdupre@localhost's password:
After I give the passwd, nothing happens after a timeout, I guess.
(I recover the hand).
>
> --
> francis
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