vnc port forwarding

krayz1e · 07-07-2005, 09:10 AM

im not sure which ports i should be forwarding to my box so that i can connect remotely 2 my desktop through my adsl router

i have the following options

ID Public Port - Start Public Port - End Private Port Port Type Host IP Address
1 ??? ???? ????? udp/tcp 192.168.1.3

any ideas guys??

JimBass · 07-07-2005, 09:22 AM

You should have tried google, or all of the VNC documentation. VNC uses 5900 or 5901 on linux, 5800 for the java browser.

Peace,
JimBass

krayz1e · 07-07-2005, 09:27 AM

so i have 2 open all 3 ports just 2 connect 2 my computer?

JimBass · 07-07-2005, 09:37 AM

Depends on how you connect. If you just use the vncviewer, then all you need to open is 5901. If you configured VNCserver it could be 5900, and if you connect through a browser it is 5800. 5901 is usually the correct one for a linux box.

Peace,
JimBass

Xzanron · 07-07-2005, 10:31 AM

Not quite correct...

VNC uses 5900+d

where d is the desktop.

So if your vncserver is running desktop 1 tehn you need 5901. If it's desktop 2 then 5902 etc. Therefore if you have more than one VNC session running (e.g. different users) then you'll need to forward more ports.

krayz1e · 07-07-2005, 09:12 PM

Quote:

Originally posted by Xzanron
Not quite correct...

VNC uses 5900+d

where d is the desktop.

So if your vncserver is running desktop 1 tehn you need 5901. If it's desktop 2 then 5902 etc. Therefore if you have more than one VNC session running (e.g. different users) then you'll need to forward more ports.

ohhh i get ya now... thanks ill give it a try

but how do i know if it is running desktop 1 or 2

Xzanron · 07-08-2005, 04:10 AM

Not sure...

I only activate my vncserver when i need it.

That is i ssh into my box, run vncserver and that command tells me the desktop number of the new session.

Since i only vnc from windows, i use the port forwarding in putty (ssh client) and hence have a secure VNC session.

Code:

 
[martin@*** ~]$ vncserver

New 'X' desktop is ***.net:2

Starting applications specified in /home/martin/.vnc/xstartup
Log file is /home/martin/.vnc/****.net:2.log

Above the :2 indicates display 2, hence port 5902

I'm not sure how to determine it for already running vnc sessions. sorry.

Xzanron · 07-08-2005, 04:16 AM

When you are done with a vnc session you can get rid of it using:

Code:

vncserver -kill :2

where :2 is the desktop number

I usually log out of the desktop before doing this (i.e. close gnome, or kde or whatever)

krayz1e · 07-08-2005, 10:53 PM

thanks guys

the port was 5901

when i was tryin 2 access it remotely i was just puttin in my wan ip and not as a socket
i.e wanip:5901

when i put that in the viewer it ran beautifully

thanks for your help guys

cfamsler · 08-14-2005, 04:46 PM

Not sure if this will help..

We recently started using SuSE - sles 9 and they have set up VNC as a xinetd service. It is tied to the user nobody, and will host lots of different users all on port 5900. I think I read a post on linuxmagazines web site on setting it up this way as well. We can only access port 5900 through our firewall, so this helped me bunches.

It works great, only downside, is that the session only lasts while connected. You can still start individual vnc servers if you need persistent connections.