vnc port forwarding

Zahid Rahman zahidr1000 at gmail.com
Wed Nov 3 00:50:56 UTC 2021


all is well that ends well.

externalip::port


On Wed, 3 Nov 2021, 12:10 am Knute Johnson, <groups at knutejohnson.com> wrote:

> Make sure you only have one instance of TightVNC running.  I see two
> ports in your post, 5901 and 6001.  In the startup for TightVNC there
> should be an option to set the port -rfbport:5900 (the documentation is
> fragmented and sparse).  Sometimes port numbers change with the display
> number on systems that have virtual displays.
>
> I usually use x11vnc just because that is the one I usually use.  It
> always uses port 5900.  Your client software should be able to select
> the port as well.
>
> vncviewer
> Section: TightVNC (1)
> Updated: August 2006
> Index Return to Main Contents
>
> NAME
> vncviewer - an X viewer client for VNC
> SYNOPSIS
> vncviewer [options] [host][:display]
> vncviewer [options] [host][::port]
> vncviewer [options] -listen [display]
> vncviewer -help
>
> Read more at: https://www.commandlinux.com/man-page/man1/vncviewer.1.html
>
> Again, I would run ps -e | grep vnc to check to see how many VNC servers
> are running.
>
>
>
> On 11/2/21 18:42, Zahid Rahman wrote:
> > I can see the issue.!!!!
> > Thanks for your time and patients.
> > I followed the instructions here .
> > https://www.smarthomebeginner.com/setup-vnc-server-on-ubuntu-linux/
> > <https://www.smarthomebeginner.com/setup-vnc-server-on-ubuntu-linux/>
> >
> > The vnc port always defaults to 5901.
> >
> > How can  I get  it to default to 5900 ?
> >
> >
> >
> >
> > On Tue, 2 Nov 2021, 10:56 pm Zahid Rahman, <zahidr1000 at gmail.com
> > <mailto:zahidr1000 at gmail.com>> wrote:
> >
> >     192.168.0.20:1 <http://192.168.0.20:1>  this works local
> >
> >     vnc viewer
> >
> >     51.77.xx.xx:1 this doesn't work. external ip
> >
> >     On Tue, 2 Nov 2021, 10:48 pm Zahid Rahman, <zahidr1000 at gmail.com
> >     <mailto:zahidr1000 at gmail.com>> wrote:
> >
> >         sudo lsof -i:5901
> >         COMMAND    PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
> >         Xtightvnc 2686 ubuntu    3u  IPv4  42834      0t0  TCP *:5901
> >         (LISTEN)
> >         Xtightvnc 2686 ubuntu   22u  IPv4 275574      0t0  TCP
> >         ubuntu:5901->192.168.0.27:53498 <http://192.168.0.27:53498>
> >         (ESTABLISHED)
> >         ubuntu at ubuntu:~$
> >
> >         On Tue, 2 Nov 2021, 10:35 pm Zahid Rahman, <zahidr1000 at gmail.com
> >         <mailto:zahidr1000 at gmail.com>> wrote:
> >
> >             ubuntu at ubuntu:~$  ps -e | grep vnc
> >                 2686 ?        00:01:21 Xtightvnc
> >             ubuntu at ubuntu:~$  netstat -tulpn | grep LISTEN
> >             (Not all processes could be identified, non-owned process
> info
> >               will not be shown, you would have to be root to see it
> all.)
> >             tcp        0      0 127.0.0.1:8009 <http://127.0.0.1:8009>
> >                      0.0.0.0:*               LISTEN      2813/java
> >             tcp        0      0 0.0.0.0:139 <http://0.0.0.0:139>
> >                   0.0.0.0:*               LISTEN      -
> >             tcp        0      0 0.0.0.0:5901 <http://0.0.0.0:5901>
> >                    0.0.0.0:*               LISTEN      2686/Xtightvnc
> >             tcp        0      0 127.0.0.1:8080 <http://127.0.0.1:8080>
> >                      0.0.0.0:*               LISTEN      2813/java
> >             tcp        0      0 0.0.0.0:6001 <http://0.0.0.0:6001>
> >                    0.0.0.0:*               LISTEN      2686/Xtightvnc
> >             tcp        0      0 127.0.0.53:53 <http://127.0.0.53:53>
> >                     0.0.0.0:*               LISTEN      -
> >             tcp        0      0 0.0.0.0:22 <http://0.0.0.0:22>
> >                  0.0.0.0:*               LISTEN      -
> >             tcp        0      0 127.0.0.1:631 <http://127.0.0.1:631>
> >                     0.0.0.0:*               LISTEN      -
> >             tcp        0      0 127.0.0.1:54200
> >             <http://127.0.0.1:54200>         0.0.0.0:*
> >               LISTEN      2813/java
> >             tcp        0      0 127.0.0.1:5432 <http://127.0.0.1:5432>
> >                      0.0.0.0:*               LISTEN      -
> >             tcp        0      0 127.0.0.1:8443 <http://127.0.0.1:8443>
> >                      0.0.0.0:*               LISTEN      2813/java
> >             tcp        0      0 0.0.0.0:445 <http://0.0.0.0:445>
> >                   0.0.0.0:*               LISTEN      -
> >             tcp        0      0 127.0.0.1:9990 <http://127.0.0.1:9990>
> >                      0.0.0.0:*               LISTEN      2813/java
> >             tcp6       0      0 :::139                  :::*
> >                      LISTEN      -
> >             tcp6       0      0 :::80                   :::*
> >                      LISTEN      -
> >             tcp6       0      0 :::22                   :::*
> >                      LISTEN      -
> >             tcp6       0      0 ::1:631                 :::*
> >                      LISTEN      -
> >             tcp6       0      0 :::443                  :::*
> >                      LISTEN      -
> >             tcp6       0      0 :::445                  :::*
> >                      LISTEN      -
> >
> >             On Tue, 2 Nov 2021, 9:53 pm Knute Johnson,
> >             <groups at knutejohnson.com <mailto:groups at knutejohnson.com>>
> >             wrote:
> >
> >                 On 11/2/21 12:10, Colin Law wrote:
> >
> >                  > Also *please* do as I asked earlier, and on the
> >                 machine running vnc run
> >                  > sudo lsof -i:5900
> >                  >
> >                  > Colin
> >                  >
> >
> >                 Just so you don't think you are the only one, I don't
> >                 think there is any
> >                 VNC server running on his computer either .
> >
> >                 Zahid, this is what you should get:
> >
> >                 knute at knute-XPS-8700:~$ ps -e | grep vnc
> >                      2566 ?        00:00:00 x11vnc
> >
> >                 knute at knute-XPS-8700:~$ netstat -tulpn | grep LISTEN
> >                 (Not all processes could be identified, non-owned
> >                 process info
> >                    will not be shown, you would have to be root to see
> >                 it all.)
> >                 tcp        0      0 127.0.0.53:53
> >                 <http://127.0.0.53:53>           0.0.0.0:* LISTEN      -
> >                 tcp        0      0 0.0.0.0:22 <http://0.0.0.0:22>
> >                          0.0.0.0:* LISTEN      -
> >                 tcp        0      0 127.0.0.1:631
> >                 <http://127.0.0.1:631>           0.0.0.0:* LISTEN      -
> >                 tcp        0      0 0.0.0.0:5900 <http://0.0.0.0:5900>
> >                            0.0.0.0:* LISTEN
> >                 2566/x11vnc
> >                 tcp6       0      0 :::22                   :::* LISTEN
> >                      -
> >                 tcp6       0      0 ::1:631                 :::* LISTEN
> >                      -
> >                 tcp6       0      0 :::5900                 :::* LISTEN
> >                      2566/x11vnc
> >
> >                 knute at knute-XPS-8700:~$ sudo lsof -i:5900
> >                 COMMAND  PID  USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
> >                 x11vnc  2566 knute    8u  IPv4  34352      0t0  TCP
> >                 *:5900 (LISTEN)
> >                 x11vnc  2566 knute    9u  IPv6  34353      0t0  TCP
> >                 *:5900 (LISTEN)
> >
> >
> >                 --
> >
> >                 Knute Johnson
> >
> >                 --
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> >
> >
>
>
> --
>
> Knute Johnson
>
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