Bill Manthorp | 7 Jun 14:46 2010

Maximum connected computers

Dear list,

Can you please advise how many computers may view the screen of a VNC server
machine and what are the criteria for determining this number?

Kind regards,

Bill.manthorp <at> scarlettec.com

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Timothy Murphy | 10 Jun 14:56 2010
Picon

Control of remote mouse pointer with krdc

I'm using krdc (the VNC viewer under Fedora-13/KDE)
to view a remote Windows XP machine,
and this works fairly well;
but I do not see how I can move the remote cursor.
Is this possible?

--

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

Corne Beerse | 10 Jun 17:31 2010
Picon

Re: Maximum connected computers

On 7-6-2010 14:46, Bill Manthorp wrote:
> Dear list,
>
>
>
> Can you please advise how many computers may view the screen of a VNC server
> machine and what are the criteria for determining this number?
>
>
>    
Well, the number of connected users is fairly limited in controll. As 
far as I know, the only options are:
- 0: none at all: switch the vnc server off
- 1: only a single user can access. It is configurable if this is the 
first user that connects or the last. See the options and be creative
- all: All users that connect can access. Somewhere there is a limit in 
the max number but as far as I know, this is not limited by the software 
or such, it is mainly limited by the capacity of the systems in use. 
Possible bottlenecks include the cpu, the network bandwith, the number 
of ports available and such.
- more: If the capacity of the vnc-server is reached, I recall there is 
a kind of vnc-proxy somewhere, which can be used to have a sinlge access 
to the effective vnc-server and provide more client connections. Mainly 
in use as either a firewall/dmz proxy for read-only sessions.

Success

CBee

_______________________________________________
(Continue reading)

Mike Gexler | 15 Jun 14:24 2010

local login

I have vnc running as a server on a linux red hat box.

I have vnc viewer running on a local xp machine.

I can't seem to connect to connect even though we have same ip schemes.

Any ideas?

Thanks

Mike

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Byron Veale | 15 Jun 15:05 2010

RE: local login


Here are some references that got me going:

http://wiki.centos.org/HowTos/VNC-Server

http://codeghar.wordpress.com/2007/11/28/centos-5-post-install-customization/

By the way, the CentOS distro is binary-compatible with Red Hat Enterprise -- same thing without the
labels, basically, so these references shouldn't be too far off...

Good luck,

-Byron

Byron Veale
Webmaster
The New Jersey State Library

-----Original Message-----
From: vnc-list-bounces <at> realvnc.com on behalf of Mike Gexler
Sent: Tue 6/15/2010 8:24 AM
To: vnc-list <at> realvnc.com
Subject: local login

I have vnc running as a server on a linux red hat box.

I have vnc viewer running on a local xp machine.

I can't seem to connect to connect even though we have same ip schemes.

(Continue reading)

Seak, Teng-Fong | 15 Jun 17:59 2010
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VNC response depends on screen response

     It seems that VNC response depends on screen response, ie VGA
card's speed.  I think VNC only sends screen updates to client only
after corresponding pixels are changed on screen (ie in VGA memory).
Am I correct?

     I've got a PC whose VGA card is "ATI 3D RAGE IIC PCI".  On the
screen, the response is quite good.  But when used in VNC, the
response is horrible -- very slow.

     Is there any plan to improve this part?  Eg using threads if
that's not used already.

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Long, Phillip GOSS | 15 Jun 15:42 2010

RE: local login

-----Original Message-----
> From: vnc-list-bounces <at> realvnc.com [mailto:vnc-list-bounces <at> realvnc.
> com] On Behalf Of Mike Gexler
> Sent: Tuesday, June 15, 2010 8:24 AM
> To: vnc-list <at> realvnc.com
> Subject: local login
> 
> I have vnc running as a server on a linux red hat box.
> 
> I have vnc viewer running on a local xp machine.
> 
> I can't seem to connect to connect even though we have same ip 
> schemes.
> 
> Any ideas?
> 
> Thanks
> 
>  
> 
> Mike
> 

...details?

					Thx, Phil Long

--------------------------------------------------------

Goss ... Innovation for Business
(Continue reading)

Aaron Brooks | 17 Jun 08:45 2010
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RealVNC Viewer and X11VNC Encryption

Hi,

I'm running X11vnc on my server with the following command
"/usr/local/bin/x11vnc -bg -forever -xkb -rfbauth /etc/x11vnc/passwd
-o /etc/x11vnc/log". This provides password protection to the server,
but it doesn't provide any encryption, so I would assume that the
frames are passed over the internet unencrypted.

The problem is, whenever I use -ssl or -enc on the X11vnc server, the
RealVNC viewer chucks a hissy and refuses to connect. Does anyone have
experience with getting these two working nicely, encrypted? (And I
don't really want to have to set up an SSH tunnel every time I want to
VNC to my machine, I know it's more secure, but less convenient).

Thanks,
Aaron

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Corne Beerse | 17 Jun 10:25 2010
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Re: local login

On 15-6-2010 14:24, Mike Gexler wrote:
> I have vnc running as a server on a linux red hat box.
>
> I have vnc viewer running on a local xp machine.
>
> I can't seem to connect to connect even though we have same ip schemes.
>
> Any ideas?
>    

This depends on a lot of settings. As the remote machine is linux, the 
vnc-session can be a fresh session (unrelated to the session on the 
console) or somehow hooked to the session at the console.

For fresh sessions, there are 2 variants: Static sessions or on-the-fly 
sessions. The first one is re-entrant: you can re-connect to them and 
more than one viewer can work with this session (that's configurable). 
The on-the-fly sessions just give a fresh login for every connection and 
logout/crash once the connection to the viewer is lost.

For the sessions hooked to the console, it depends on the level of the 
hook. If it is hooked to the current login session, the user at the 
console can get a question if the remote session is allowed or not.

In the end, if both machines have exact the same IP settings, it will 
never work if they have the same ip addresses...

CBee

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(Continue reading)

Claudio Coletta | 15 Jun 18:38 2010
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Re: local login

Hello,

> I have vnc running as a server on a linux red hat box.
>
> I have vnc viewer running on a local xp machine.
>
> I can't seem to connect to connect even though we have same ip schemes.
>
> Any ideas?
>
	have you checked the configuration of the firewall on both PCs?

> Thanks
>
> Mike
>
>
Bye,
Claudio.

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Gmane