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Apr 30, 1998, 12:57 PM

Post #1 of 14 (2625 views)
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VNC

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I have sucessfully setup vnc on my own machine which is a Redhat 5 system.
While trying to set it up on my uncle's machine however which is basically
identical, I'm running into the following error when starting up the server:

(taken from X.log)
rfbInitSockets: listening on TCP port 5901
httpInitSockets: listening on TCP port 5801
AUDIT: Mon Apr 27 13:44:01 1998: 885 Xvnc: client 1 rejected from IP
127.0.0.1 port 21764

Some background info: The machine i'm setting up for him is on 192.168.1.4
and my machine is on 192.168.1.2.

Any ideas? The server just shows a blank grey screen...no windows
manager..no xterm..

=============================================================
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marie at inconcert

May 11, 1999, 8:14 AM

Post #2 of 14 (2579 views)
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Re: VNC [In reply to]

Hi Melissa,

The following errors defined in the log below seem to only happen for

users who belong to 1 group. Not sure why this is. Does the user need

any special access? Has anyone been able to help you with this problem?

The contents of the log file are:
_XSERVTransSocketCreateListener: failed to bind listener
_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: failed to create listener for
local

Fatal server error:
Failed to establish all listening sockets

Marie Reale
CS Engineer
marie [at] inconcert

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christian.didonato at salmat

Jun 6, 2000, 12:40 AM

Post #3 of 14 (2594 views)
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Re:VNC [In reply to]

Hey,

It really depends on what you have existing.....

Can you dial into your friends computer ?
Is it over the internet ?
Is your friends computer next to yours ?

Christian

____________________Reply Separator____________________
Subject: VNC
Author: vnc-list [at] uk
Date: 6/06/00 10:05

To whom it may concern:

Do I need a second phone line to use vnc, can I have file and printer
sharing with vnc, and can I use a modem or do I need to use a network card
to use vnc?

Also what kind of operating system do I use to connect to my friend's
computer. Does one computer have to be the server in order to use vnc?

Thank you for reading and responding,

Cindy
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dries at tvh

Jun 6, 2000, 1:21 AM

Post #4 of 14 (2553 views)
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RE: VNC [In reply to]

Dear Cindy,

VNC is only a management tool. So VNC won't allow you to use file and
printer sharing, but if you can make a vnc connection, you should also be
able to share printers and so...

But, if you connect through the internet; there is a great danger that
someone may hack into your computer, and then you need a firewall / vpn to
use printer sharing through the internet.

If you send me your detailled configuration, I'll be happy to explain
several things.

Dries Feys-IT department
TVH forklift parts-Thermote & Vanhalst NV
Driemasten 120-126 -- B-8560 Gullegem-Belgium
E-mail: Dries [at] tvh: http://www.tvh.be
Tel: +32 (0)56 434745 -- Fax: +32 (0)56 434488

-----Original Message-----
From: kevin doan [SMTP:doanminh25 [at] hotmail]
Sent: Tuesday, June 06, 2000 2:06 AM
To: vnc-list [at] uk
Subject: VNC

To whom it may concern:

Do I need a second phone line to use vnc, can I have file and printer
sharing with vnc, and can I use a modem or do I need to use a network card
to use vnc?

Also what kind of operating system do I use to connect to my friend's
computer. Does one computer have to be the server in order to use vnc?

Thank you for reading and responding,

Cindy
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spalocz at tgtsolutions

Dec 7, 2000, 10:00 AM

Post #5 of 14 (2579 views)
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RE: vnc [In reply to]

Hey,
Try changing the twm in xstartup to dtwm. this is the dt windows manager.

Or you could use the -query option. To get the dtlogin screen.

Steve

-----Original Message-----
From: owner-vnc-list [at] uk
[mailto:owner-vnc-list [at] uk]On Behalf Of Abbas Amiri
Sent: Wednesday, December 06, 2000 9:14 PM
To: vnc-list [at] uk
Subject: vnc

Hi:

I connect to my Unix VNC server and I just see a grey desktop with a cursor.
I looked at the FAQ page and could not figure out what to do. I'm usnig
Exeec to connect to a SUN workstation using fvwm2 Xwindow manager. I
launched vncserver via Exceed and telnet, it did not make a difference. I
linked my ./.vnc/xstartup to my .Xdefaults, it didn;t change either. This is
what I had in xstartup originally:

#!/bin/sh

xrdb $HOME/.Xresources
xsetroot -solid grey
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
twm &

I changed the last line to fvwm2 and realized no difference either. I do not
have .Xresourses in my home area. I'm enclosing the .files from my home area
for furthur debug. Any help would be greatly appreciated. Thanks.

Regards,

- Abbas

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .aliases]

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .cdsplotinit]

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .cshrc]

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .emacs]

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .fvwm2rc]

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .Xdefaults]

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .xemacs-options]

[.demime 0.97b removed an attachment of type application/octet-stream which
had a name of .xsession]
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carlyle.sutphen at db

Dec 22, 2000, 4:03 AM

Post #6 of 14 (2579 views)
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Re: VNC [In reply to]

Wie meinst Du das?
Do you mean the menus on the viewer?
VNC has yet to be subjected to internationalization.
What OS's do you use? F|r welche Betriebsysteme?

On X you can edit .Xdefaults. A list of the widget hierarchy is at the bottom
of:
http://www.uk.research.att.com/vnc/xvncviewer.html

On windows:

Kieran Coughlan (KieranCoughlan [at] mcs-international)
on Thu Dec 14 2000 - 12:26:36 GMT wrote in RE: FRENCH LANGUAGE:
> All you need is a copy of Visual Studio running under Windows NT, open
> the exe files as resources, modify all text into French and save.

Date: 22.12.2000 10:58
To: vnc-list [at] uk

Reply to: vnc-list [at] uk

Subject: VNC
Message text:

Hallo zusammen!
Ein sehr gutes Programm, das VNC!

Gibt es davon auch eine deutsche Version?

Have you e GERMAN Version? (Yes please!!!!!)

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Ian.Cowley at nfu

Dec 27, 2000, 2:55 AM

Post #7 of 14 (2574 views)
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RE: VNC [In reply to]

Unfortunately I don't :(

Ian Cowley

> -----Original Message-----
> From: Kvnig Marcus [mailto:marcus.koenig [at] bluewin]
> Sent: 21 December 2000 21:31
> To: postmaster [at] uk
> Subject: VNC
>
>
> Hallo zusammen!
> Ein sehr gutes Programm, das VNC!
>
> Gibt es davon auch eine deutsche Version?
>
> Have you e GERMAN Version? (Yes please!!!!!)
>
> Thank you an good by!
>
> Eine sehr schvne Zeit w|nscht
>
> \\\!!!///
> (\@ @/)
> -----------------o000--(_)--000o-------------------------------------
> Marcus Kvnig
> marcus.koenig [at] bluewin
> http://mypage.bluewin.ch/marcuskoenig/
> gesch: markus.koenig [at] syngenta
> oder Tel. 079/246 6468
> .oooO Oooo.
> ( ) ( )
> --------------------\ (--------)
> /-----------------------------------------
> \_) (_/
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RoyB at klune

Jul 24, 2001, 9:35 AM

Post #8 of 14 (2560 views)
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RE: VNC [In reply to]

Hello all. Can VNC be used from a web browser. I have a server at work and
want to access this from my system at home, but without dialing into my VPN
tunnel, I cannot access the server. I read somewhere that this can be setup
to access through a standard web browser. Does anyone know what the
procedures are to set this up?

Thanks

Roy Bosworth
Senior Manager IT/MIS
818-503-8100
`.....??`...><(((,o>?
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quekhc at altavista

Jul 24, 2001, 9:57 AM

Post #9 of 14 (2574 views)
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RE: VNC [In reply to]

First of all, you have to ensure that your VNC server is not running on a machine that is using an internal IP address, meaning those that cannot be access outside your VPN. Then, with your server running, type the following in the URL of your browser :

http://my_machine_IP:5801

Assumption :
VNC normally uses 5801 for the HTTP port of unix machines, if you are using windows, then it is likely to be 5800.

this should work. What you will first see if a gray screen with an authenication textbox, then when the correct password has been entered, you should see the screen of your network computer.

Don't hesitate to ask!!!

On Tue, 24 July 2001, Roy Bosworth wrote:

>
> Hello all. Can VNC be used from a web browser. I have a server at work and
> want to access this from my system at home, but without dialing into my VPN
> tunnel, I cannot access the server. I read somewhere that this can be setup
> to access through a standard web browser. Does anyone know what the
> procedures are to set this up?
>
> Thanks
>
> Roy Bosworth
> Senior Manager IT/MIS
> 818-503-8100
> `.....??`...><(((,o>?
> ---------------------------------------------------------------------
> To unsubscribe, send a message with the line: unsubscribe vnc-list
> to majordomo [at] uk
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ccah at thegreen

Jul 26, 2001, 4:23 PM

Post #10 of 14 (2574 views)
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Re: VNC [In reply to]

Cheang,

I have used your suggestion successfully from Linux to Windows and between
Windows systems, but cannot get it to work from Windows to linux. I get a
'File not Found' message on the screen.

Any Ideas as to why?

Regards,

Ceri Hankey

----- Original Message -----
From: "Quek Hong Cheang" <quekhc [at] altavista>
To: <vnc-list [at] uk>
Sent: Tuesday, July 24, 2001 5:54 PM
Subject: RE: VNC

> First of all, you have to ensure that your VNC server is not running on a
machine that is using an internal IP address, meaning those that cannot be
access outside your VPN. Then, with your server running, type the following
in the URL of your browser :
>
> http://my_machine_IP:5801
>
> Assumption :
> VNC normally uses 5801 for the HTTP port of unix machines, if you are
using windows, then it is likely to be 5800.
>
> this should work. What you will first see if a gray screen with an
authenication textbox, then when the correct password has been entered, you
should see the screen of your network computer.
>
> Don't hesitate to ask!!!
>
>
> On Tue, 24 July 2001, Roy Bosworth wrote:
>
> >
> > Hello all. Can VNC be used from a web browser. I have a server at work
and
> > want to access this from my system at home, but without dialing into my
VPN
> > tunnel, I cannot access the server. I read somewhere that this can be
setup
> > to access through a standard web browser. Does anyone know what the
> > procedures are to set this up?
> >
> > Thanks
> >
> > Roy Bosworth
> > Senior Manager IT/MIS
> > 818-503-8100
> > `.....??`...><(((,o>?
> > ---------------------------------------------------------------------
> > To unsubscribe, send a message with the line: unsubscribe vnc-list
> > to majordomo [at] uk
> > See also: http://www.uk.research.att.com/vnc/intouch.html
> > ---------------------------------------------------------------------
>
>
> Find the best deals on the web at AltaVista Shopping!
> http://www.shopping.altavista.com
> ---------------------------------------------------------------------
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> to majordomo [at] uk
> See also: http://www.uk.research.att.com/vnc/intouch.html
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fwb at vlfbox

Aug 17, 2001, 5:11 AM

Post #11 of 14 (2549 views)
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Re: Vnc [In reply to]

Hi,

I 4am using the vncserver, running as a serverice on a win 2k server.
Connection are ok, but only, if I 4ve connect the Server over the
TerminalClients. Otherwise my screen is black.
What is the reaseon ?

Thanks

Willi
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whooper at freeshell

Jun 14, 2003, 12:43 AM

Post #12 of 14 (2547 views)
Permalink

Re: VNC [In reply to]

Cronican, Gina said:
[snip]
> 1. Is it possible to have two versions of VNC running on the server
> without
> one affecting the other?
>
> 2. Is it possible to limit the PC's a VNC user has access to?
>
> Thanks I hope to hear from someone :)

It is impossible to give you advice without knowing what OS you are using.

--
William Hooper

bob_lange at itc

Nov 24, 2003, 9:11 PM

Post #13 of 14 (2582 views)
Permalink

RE: VNC [In reply to]

Did you configure your home xp machine to have VNC server run as a service?
Maybe that part got left out and needs to be started.

-----Original Message-----
From: Bert Visser [mailto:oaklane [at] planet]
Sent: Monday, November 24, 2003 3:07 PM
To: vnc-list [at] realvnc
Subject: VNC

I am a novice. Question. On my laptop W 98se vnc viewer and server work.
On my desktop Wxp home, updated from W Millennium the viewer works, but
server is not functioning. Anyone?

Bert

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jbeauford at eightinonepet

Sep 18, 2006, 1:42 PM

Post #14 of 14 (2584 views)
Permalink

RE: VNC [In reply to]

Lloyd Abberton wrote:
> Dear Sir / Madam
>
> I think VNC is great.
>
> I have a windows xp sp2 pc, and I was running vnc v 4.1.1, but I got
> hacked.
>
> I now have version 4.1.2, can someone tell me the best way to protect
> myself when running vnc please?
>
> I have an encryption password set, but what more can i do to protect
> myself whe using vnc.
>
> Thanks
>
> Lloyd

Don't worry too much now. 4.1.1 had a known exploit.
http://www.securityfocus.com/archive/1/433994
If you've upgraded, you should be good to go.

But just in case, here are some ideas:

Tunnel it over SSH http://www.erikjheels.com/vnc-over-ssh.html

Use non standard ports
http://www.tweakxp.com/article37251.aspx

Restrictive firewall ACL's that grant access to small selection of known
originating IP's

Hamachi
http://www.help2go.com/Tutorials/Software_Utilities/Remote_Control_Anoth
er_PC_Securely_with_VNC_and_Hamachi.html
http://www.hamachi.cc/

VPN
Check out SSL-Explorer. It has a VNC plugin.
http://sourceforge.net/projects/sslexplorer/

And of course,

Complex passwords.

Cheers!

JMB
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