Priority to user on local machine in mouse/keyboard event handlin g.

[Sharma, Shashi]

Is it possible to setup vncserver so that the mouse/keyboard handling on the
local machine  take precedence over the remote client(vncviewer). That is if
the person on the console moves the mouse, then the vncviewer is set to
read-only mode and as soon as the person stops moving the mouse, the
vncviewer is set back to the read-write mode.


-shashi
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RE: RFB Protocol 4.0 - encodings wanted

[Sharma, Shashi]

Where can I get the docs for RFB 4.0/5.0 ? And
Can we add a request in the RFB protocol to query for the pointer/keyboard
state ? ie x,y coordinate of the pointer and the state of capslock etc key.
-shashi

-Original Message-
From: Stig A. Olsen [mailto:[EMAIL PROTECTED]]
Sent: Monday, July 16, 2001 3:51 AM
To: [EMAIL PROTECTED]
Subject: RE: RFB Protocol 4.0 - encodings wanted


Just a side note here: My company has just released a new software version
for our videoconferencing equipment that support a VNC client (RFB 3.3).
Since VNC is GPL we naturally had to handcode everything from scratch based
on the RFB documentation (we can't release the source since we're using a
single linked image that contains source code from other vendors, such as
the embedded operating system - and we surely don't want to violate the
GPL).

I think that getting more and more support for VNC is a "good thing", so I
just hope that further RFB releases do not make too extensive use of other
full GPL'ed packages that will be "close to impossible" to recode for more
specialized targets. If one could try to use a bit more liberal licenses
(such as LGPL or even BSD) I think that would help a lot. We're absolutely
not trying to capitalize on GPL based software, we just thought that VNC was
the best thing out there to get this kind of support for our systems (also
since we're then not strictly tied to the Windows platform when it comes to
the server side).

best regards,
Stig A. Olsen
www.tandberg.net


> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Tristan
> Richardson
> Sent: Monday, July 16, 2001 11:58 AM
> To: Andrew van der Stock; [EMAIL PROTECTED]
> Subject: Re: RFB Protocol 4.0 - encodings wanted
>
>
> We already use RFB version 4.x in some of our projects.
> We're now developing
> version 5.0 of the protocol which is a substantial change
> from the version 3
> protocols.  It would be good to coordinate over what version
> number you choose
> for your new protocol so that we don't release incompatible
> protocols which
> claim to be the same version number.  That would be bad :-)
>
> Cheers
>
> Tristan
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RE: a Question

[Sharma, Shashi]

just curious. why would you want to run any application using netbeui.
-shashi

-Original Message-
From: Glenn Maks [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 17, 2001 9:07 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: a Question 


originally I was responding to a question asked about remote access between
two computers on the same subnet using NetBEUI, which I
don't thing VNC supports, using software within the scope it was designed
for is always your best bet, that is to say exploiting the designed
functionality which best fits your task at hand. Applying firewall security
and Netmeeting is a whole different discussion all together, and we
all know the only true secure connection is not have one at all, as far as
running everything over a single port, that is what wrappers
do, once again, WebEx wrote their own wrapper to funnel all of the
Netmeeting functionality over Port 80 to allow them to market their
service as a true web based collaboration service. I have to say this,
utilizing the collaboration  features within Netmeeting over a VPN
works just fine, I do remote administration to servers in Holland and the UK
from where I sit here in Horsham, Pa with no problems, I also
use VNC to other remote administration tasks as well and that works just
fine, it is sort of like using the right tool for the job, you don't
hammer a nail in using a pair of pliers, and you can't run VNC over NetBEUI.

I have found Netmeeting to be a "virtual" nightmare through a secure
firewall.  VNC has some security problems of its own, however routing VNC
could not be simpler or more secure.  Kudos for the designers of VNC on this
point.  Netmeeting requires multiple outbound and inbound ports including
389, 522 and 1503.  These pose a potential security risk to your network.
VNC uses its own port of 5900 that can be customized by terminal.  This is
much better than using existing LDAP, TCP and UDP ports as you do not run
the risk of an intruder utilizing these ports to gain entry to other
resources.  In my opinion there is no comparison between Netmeeting and VNC.
If anyone does figure out how to route Netmeeting through a single port, I
would be more than interested to know how.
In future releases of VNC I would love to see communication between client
and server be encrypted within the program, rather than using a tunnelling
or third party packet encryption method.
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RE: a Question

[Sharma, Shashi]

That was my question. the only way vnc will not work is when you remove
tcp/ip from the machine. the newer windows os will not even let you do it.
tcp/ip and netbeui can sit side by side so why wouldnt you allow tcp/ip for
vnc.
-shashi

-Original Message-
From: Neal Isaac [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 17, 2001 12:33 PM
To: [EMAIL PROTECTED]
Subject: RE: a Question 


Hate to break the news to you Phillip.  Netbeui will not work over the
Internet and has virtually gone the way of the DoDo bird.  TCP/ip is it.
Try Windows 2000 and the Remote TCP/ip printing feature.  Trying Dos
mappings will not work over the Internet unless you can somehow tunnel using
a third party tool.

-Original Message-
From:   [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Pradip Shah
Sent:   Tuesday, July 17, 2001 11:27 AM
To: [EMAIL PROTECTED]
Subject:RE: a Question

Here is a little bit from a novice.

I still need "netbeui" whuich stands for netbios extended user interface if
I wish to capture a printer port from a dos window under Windows 9x for
remote printing.

Not withstanding anything available on large systems I still find dos based
multi user accounting applications 100 times more reliable & crash proof
than anyrthing available on windows platform. For small businesses involving
10 to 12 computers it is still a very good solution.

As a rule I have VNC server running on all the machines on a pper ro peer
network so that I can take over control of any machine to change the
configuration/ reboot add remove feature etc.

Pradip Shah.

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Glenn Maks
Sent: 17 July 2001 22:35
To: [EMAIL PROTECTED]
Subject: RE: a Question


The history behind NetBEUI dates back to the old IBM LAN Manager days
roughly 1985, Microsoft quickly adopted this transport for their
Windows for Workgroups strategy, this transport was designed to be used in
small LAN environments that would be connected to other
LAN segments or mainframes using a gateway. Here are some of the advantages
of this small compact transport.  Very fast in small LANs,
it has good error protection and it uses very little memory. Here are some
of the disadvantages. It is not routable, and the performance
over WANs is very poor, to get around these limitations Novell developed
NetBEUI over IPX for routing, the rest is history. NetBEUI is
still available as a installable transport because there still are small
LANs in operation and NetBEUI fits this role very well.  Hope this
answered your question.

Glenn

just curious. why would you want to run any application using netbeui.
-shashi

-Original Message-
From: Glenn Maks [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 17, 2001 9:07 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: a Question


originally I was responding to a question asked about remote access between
two computers on the same subnet using NetBEUI, which I
don't thing VNC supports, using software within the scope it was designed
for is always your best bet, that is to say exploiting the designed
functionality which best fits your task at hand. Applying firewall security
and Netmeeting is a whole different discussion all together, and we
all know the only true secure connection is not have one at all, as far as
running everything over a single port, that is what wrappers
do, once again, WebEx wrote their own wrapper to funnel all of the
Netmeeting functionality over Port 80 to allow them to market their
service as a true web based collaboration service. I have to say this,
utilizing the collaboration  features within Netmeeting over a VPN
works just fine, I do remote administration to servers in Holland and the UK
from where I sit here in Horsham, Pa with no problems, I also
use VNC to other remote administration tasks as well and that works just
fine, it is sort of like using the right tool for the job, you don't
hammer a nail in using a pair of pliers, and you can't run VNC over NetBEUI.

I have found Netmeeting to be a "virtual" nightmare through a secure
firewall.  VNC has some security problems of its own, however routing VNC
could not be simpler or more secure.  Kudos for the designers of VNC on this
point.  Netmeeting requires multiple outbound and inbound ports including
389, 522 and 1503.  These pose a potential security risk to your network.
VNC uses its own port of 5900 that can be customized by terminal.  This is
much better than using existing LDAP, TCP and UDP ports as you do not run
the risk of an intruder utilizing these ports to gain entry to other
resources.  In my opinion there is no comparison between Netmeeting and VNC.
If anyone does figure out how to route Netmeeting through a single port, I
would be more than interested to know how.
In future releases of VNC I would love to see communication between client
and server be encrypted within the program, rather than using a tunnelling

RE: NT4Server: VNC Service Won't Stop

[Sharma, Shashi]

I have a program which kill a process even if the task manager cant kill it.
send me an email if you want it.
-shashi

-Original Message-
From: Jeff Beaugrand [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 31, 2001 9:01 AM
To: '[EMAIL PROTECTED]'
Subject: NT4Server: VNC Service Won't Stop


Problem:
WinVNC.exe service running, but won't stop. Will not accept connections or 
respond in any way.

Environment:
Windows NT4.0 Server w/Service Pack 5, VNC v3.3.3r7_x86_win32

Efforts so far:
NT4 Service Manager has WinVNC.exe as an installed service, and is not 
running. Trying to start it gives error message that it is already running.
Net Stop WinVNC does not work.
Manually launching WinVNC.exe does not work.
Manually launching WinVNC.exe -kill does not work.
Manually launching WinVNC.exe with any switch gives no response.
Task Manager gives an "Acces Denied" error when trying to close the process 
from its list.
Still trying other things?

Any help would be appreciated.

Jeff Beaugrand
Assistant System Administrator
Peterson Spring - Kingsville
208 Wigle Avenue
Kingsville, Ontario, Canada N9Y 2J9
519-733-2358 x259
Pager: 519-561-1942
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RE: how can 2 people can use vnc

[Sharma, Shashi]

On unix you can start Xvnc with -alwaysshared. This will autmatically share
even if the viewer is not asking for it.
On WinVNC the registry entry under HKLM\Software\ORL\WinVNC3
ConnectPriority DWORD = 1
will do the same.
-shashi

-Original Message-
From: Thomas Herrmann [mailto:[EMAIL PROTECTED]]
Sent: Saturday, August 04, 2001 1:47 PM
To: [EMAIL PROTECTED]
Subject: Re: how can 2 people can use vnc


Hi Debby,

> thanks for reply... where is the "share option "?
> i am using vnc viewer 3.3 and have'nt see that option.

at the moment i can only check it on my Win2k box, but it should work
similar
on othersystems:

Invoke "vncviewer" with "-shared" (unix) or "/shared" (windows). Or choose
options onthe startup dialog and check "Request shared session" (It's in the
"misc"
section).
Hope that helps
Thomas
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RE: ConnectPriority - can't share Windows NT VNC server

[Sharma, Shashi]

Its in HKLM\Software\ORL\WinVnc3 
Not in  HKLM\Software\ORL\WinVnc3\Default

-Original Message-
From: Chris de Vidal [mailto:[EMAIL PROTECTED]]
Sent: Sunday, August 05, 2001 7:04 AM
To: [EMAIL PROTECTED]
Subject: ConnectPriority - can't share Windows NT VNC server


I can't seem to get Connect Priority working like
intended.

To quote the documentation:

ConnectPriority indicates what WinVNC should do when a
non-shared connection is received:
0 = Disconnect all existing connections.
1 = Don't disconnect any existing connections.
2 = Refuse the new connection.

On my NT server, I put the DWORD ConnectPriority in
HKEY_LOCAL_MACHINE\SOFTWARE\ORL\WinVNC3\Default and
gave it a value of 1.

I stopped and started the VNC service and connected my
Linux box.  As long as I specify -shared, or click the
sharing button on a Windows client, I can connect
other clients and share the server.  I connected my
Linux box and a Windows 2000 laptop.

As soon as a client tries to connect that does not
have sharing enabled, it disconnects all existing
connections and logs in.

Is this not working as the documenation said it
should?  I can't enable sharing on every viewer.

Please advise, oh wise and mighty group members.

CD


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RE: ALT+TAB

[Sharma, Shashi]

Certainly.
right click on the title bar and select Alt Down
Press tab
Right click on the title bar and select Alt up.

you can send any combination of key with this method.



-Original Message-
From: MotorPsyko [mailto:[EMAIL PROTECTED]]
Sent: Monday, August 06, 2001 10:33 AM
To: [EMAIL PROTECTED]
Subject: ALT+TAB


Hello, I'm curious if there is a way to send ALT+TAB though VNC for windows
applications that happen to take up the full screen.

Thanks
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RE: Taskmanager and a comments about VNC

[Sharma, Shashi]

I see taskmanager on my remote machine. i have no problem. If you tell us
what os you are using and what is your setup perhap someone here can help
you.

- Linux users don't see their mousepointer moving when their machine is
taken
over

Xvnc is not like WinVNC. Xvnc is more like a terminal server. I will be
horrified if somehow the linux user can see the mousepointer moving when i
move it remotely.


-Original Message-
From: Anouk Kuiling [mailto:[EMAIL PROTECTED]]
Sent: Sunday, August 12, 2001 12:29 PM
To: [EMAIL PROTECTED]
Subject: Taskmanager and a comments about VNC

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RE: VNC server on a system without any graphics system whatsoever ?

[Sharma, Shashi]

I think you can. The Xvnc doesnt rely on framebuffer or any hardware device
so it should be possible.
-shashi

-Original Message-
From: Alex Pavloff [mailto:[EMAIL PROTECTED]]
Sent: Monday, October 01, 2001 1:06 PM
To: '[EMAIL PROTECTED]'
Subject: VNC server on a system without any graphics system whatsoever?


Hey folks.

Is it possible to create a "fake" VNC server?  I'm sure it is, but has
anyone done it, or are there any comments on what would need to be done.

Lets say I have an embedded device with no display whatsoever (not even any
display hardware), connected via Ethernet.  I want to use the Java Viewer
(or any viewer, really) and connect to this device to view a bunch of
screens that have been created *somewhere* in the embedded device by an
application that I've written to handle all the mouse and keyboard events
coming over the network.  No changes to the viewer really, but a server for
completely abstract display.

Any thoughts?

Alex Pavloff
Software Engineer
Eason Technology 
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RE: VNC Protocol trace

[Sharma, Shashi]

This is  brief description of handshake between server and viewer.
// RFB Handshake
// 1. Server => Viewer 12 bytes of RFBVersion of Server
// 2. Viewer => Server 12 bytes of RFBVersion of Viewer
// 3. Server => Viewer  4 bytes of auth schme used by the server 
//  0 = conn failed, 1 = no auth
2 = vnc auth
// 4.   (i) if on step 3 the value is 0 then Server => Viewer 
// 4 bytes  reason length
// reason-lengthresaon string
 
//  (ii) if on step 3 the value is 2 then 
//  Server => Viewer 16 byte challenge
//  Viewer => Server 16 byte response
//  Server => Viewer 4 byte status  0== OK 1 ==
Failed 2 == too many 
//   if the value of status is 1 then this step is
repeated 
//  (iii) if on step 3 the value is 1 then no data is exchnaged
in this step. 
//  5. if auth has succeeded or no auth was required then Viewer =>
Server 1 byte shared flag.
//  6. This ends handshake

-Original Message-
From: Chris Hare, CISSP, CISA [mailto:[EMAIL PROTECTED]]
Sent: Friday, October 26, 2001 11:19 PM
To: [EMAIL PROTECTED]
Subject: VNC Protocol trace


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1


I am looking at a VNC protocol trace between a WinVN client and a VNC
server running on a unix system.  I have found the packets with the
protocol version from the client to the server, and then from the
server to the client.  what I want to understand is"

a) are there any other packets after the server send its protocol
version to the client before the authentication starts, or is the
next packet sent from the server the authentication mode (i.e. 0,1 or
2)?

If anyone has ever done a protocol trace using tcpdump and documented
the phases in the trace, that would be very useful to the exercise I
am undertaking.

Thanks.

Chris

- --
Chris Hare, CISSP, CISA
[EMAIL PROTECTED]


-BEGIN PGP SIGNATURE-
Version: PGPfreeware 7.0.3 for non-commercial use 

iQA/AwUBO9pRzbP6rSnwJKNIEQKphwCfePBNQ0Q64sjY5Qud4AT38U3OPLkAoJpf
MENlUpCBjeg8z096PuNXALeA
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XVNC and XServer Extensions

[Sharma, Shashi]

Hi everyone,
I am trying to run some proprietary software on Xvnc which uses the XIL
extensions.. I am not sure whether the Xvnc supports the XIL extension, most
probably it doesnt. My question to all the gurus
1. Is there any possiblity to add the XIL extension to the Xvnc ? I am
willing to do the work. I just need the indicators how to go about it.
2. The same question about the X server extensions in general. How to add
the xserver extension from the xfree86 base code ?
Any help will be appreciated. 
Thanks
-shashi
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RE: many connections modifications

[Sharma, Shashi]

I am not aware if there are any restriction on the number of connection in
the code. Are you talking about WinVNC or Xvnc ? 
Thanks
-shashi

-Original Message-
From: Lonnie Cumberland [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 22, 2002 7:06 AM
To: [EMAIL PROTECTED]
Subject: many connections modifications


Hello All,

I seem to remember someone asking about being able to make many
connections (on the order of 100 or more) to a server through VNC and
was wondering what modifications I needed to make to the sources to
handle this?

Any help would be greatly appreciated.
Cheers,
 Lonnie Cumberland
 OutStep Technologies Incorporated
 (313) 832-7366

 URL: http://www.outstep.com
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RE: Display Access refused by server

[Sharma, Shashi]

Either start Xvnc with -ac option(edit your vncserver file)  or after
starting Xvnc run the command
xhost +. Both of them opens potential security problem. 

-Original Message-
From: Olivier Picot [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 06, 2002 9:40 AM
To: [EMAIL PROTECTED]
Subject: Display Access refused by server


Hello everybody,

I've got a problem when using vnc. I f someone knows something anout it,
I
did not find anything neither in the mailing list archive, nor in the
FAQ.
Here is the detailed issue:

Environment: Solaris
Using a pool of machines, I need to be able to start some jobs
on different machines, each of them running under X display (the
job is embedded into a short script which opens a vnc session on
the machine).

Here is a part of the launch script:
set nvclog = `$XVNCHOME/vncserver -depth 24 -nolisten local |&
/bin/grep 'Log file is' | /bin/awk '{print $4}'` # runs the server
set nvcdisplay = `basename ${nvclog:r}` # and gets the display host
and port


During its execution,the job sometimes run into trouble and cannot
access the X display. Here is the message I sometimes (unreproducible)
get
from my application ():

> Xlib: connection to "cdssoph38:1.0" refused by server
> Xlib: Client is not authorized to connect to Server
> xwd: unable to open display 'cdssoph38:1'
> usage: xwd [-display host:dpy] [-debug] [-help] [-root|-id |-name ]
[-nobdrs] [-out ] [-xy] [-add value] [-frame]
> xwdtopnm: couldn't read XWD file header
4d8

Do you know any possible reason for this problem?

Thanks,

Olivier.

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RE: shift key getting "stuck" on for mouse operations

[Sharma, Shashi]

I dont know whether this will work or not(I am not able to reproduce the
problem) but you may try

Select the vncviewer window press Shift Key (and keeping it pressed) select
any other window and release the shift key.

If this doesnt work try
Select any window (other than vncviewer) and press Shift key and keeping it
pressed select  the vncviewer window and release the key.

Try this with both the shift key.
-shashi

-Original Message-
From: Matt Swift [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 05, 2002 2:34 PM
To: [EMAIL PROTECTED]
Subject: shift key getting "stuck" on for mouse operations


I have searched around on this list and web sources but found no
mention of a problem that confronts me regularly when using both the X
and Win32 viewers to connect to a Win32 host.

The connection can get corrupted in such a way that the shift key is
permanently down with respect to mouse clicks.  Selection of a certain
file, for example, then becomes impossible.  Worse, an innocent
double-click on a file on the desktop can open almost everything on
the desktop.

If I close the connection and reconnect, the problem remains.
Sometimes (all the time?) if I wait several minutse before
reconnecting, the problem goes away.

Another way to cure the problem is to launch an application in which
you can type text (Notepad, search panel, etc.), and type some text.
The text appears in lower-case, and after having done this, the shift
key is unstuck.

This problem is a pretty crippling one, especially when you
accidentally open 50 files at once and have to click away 50 windows.
I do not know what specifically triggers the problem, but I can rely
on VNC developing it if I use a connection for a while (an hour?).  I
have observed it on the VNC host on two different W2k machines and a
WinXP machine.  (I have observed it using clients on each of those
three machines and using an X client -- though other evidence strongly
suggests it is a host not a client problem.)  I have observed it when
running as a service and when manually run as an application.  I have
observed it connecting directly to the host and connecting via ssh and
a local socket (X client to one of the W2k hosts).  I have observed it
with full-color bandwidth and with reduced 8-bit bandwidth.  As to
permutations of the above, I have tried many but perhaps not all.

Any help solving this problem will be greatly appreciated.
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RE: VNC Video Driver (Hook) for Win2K

[Sharma, Shashi]

As far as I know, you have to use the vnc server bundled with the driver.
You can also patch the code changes to tightvnc and make it work. 

1.The normal WinVNC server will not use the video hook driver. You will have
to use the one Rudi wrote.
2. You can use any vncviewer but then you may not be able to use jpeg
encoding.


-Original Message-
From: Moreland, Julius [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 06, 2002 11:33 AM
To: '[EMAIL PROTECTED]'
Subject: VNC Video Driver (Hook) for Win2K


Can one use any version of VNC Server and Viewer with this video hook?
Specifically TightVNC. Or is it necessary to use the WinVNC Dist. that is
also availabe by this author?
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RE: Winvncdrv Update (drivers for w2k and nt4)

[Sharma, Shashi]

If you give me the specs I can write this utility. Please send me email if
you are interested. 
-shashi
[EMAIL PROTECTED]


-Original Message-
From: De Vos Rudi [mailto:[EMAIL PROTECTED]]
Sent: Sunday, March 10, 2002 3:24 PM
To: [EMAIL PROTECTED]
Subject: Winvncdrv Update (drivers for w2k and nt4)


Hi all,

After a weekend of hard work, and some good tips a new version is
available.

Encoder/decoder are now loaded as plugins.  This gives more freedom and
the core
stays compatible with the old at&t version.


Changes:

Viewer
-Standard at&t viewer with plugin module
-decoders jpeg and jpeg-b&w as plugins


Server
-Standard at&t server with plugin module and video driver
-Because not all functions are available on nt4 and w2k, there are 2
version of the server
and video driver.
-encoders jpeg and jpeg-b&w as plugins

Video driver:
-w2k
-nt4 (still some regs to change manual)
Forgot in readme,
dword have to be 1 or driver won't start, change in reg file
"Attached.ToDesktop"=dword:0001

Download:
http://services.simac.be/vnc/winvncdrv/sources
vncviewer.exe
vncdrvw2k.exe
vncdrvnt4.exe
Source code needs a cleanup first, in the near future


Todo:
+Try to find some more bugs. To get it fully stable.
+Who can program a little util to copy and changes some reg keys and
value on nt4
+New stuff...?
+Tight :  there are to many changes in the code, the encoder is in all
parts Plugin ?

BUG:
Don't restart the driver (stopdrv+startdrv) while a client is
active.-->bsod.


Rudi De Vos

Thanks again Laurentiu for the helping me out on nt4.
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RE: winvncdrv & NT4

[Sharma, Shashi]

Installed the driver(NT4) and followed all the instructions. On the bootup
no errors are displayed  but when making the connection from a normal
vncviewer (tightvnc) the server pops up the message box "No video driver
detected\This version is winvncdrv only"
Any idea what is causing the error.

-shashi

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 11, 2002 4:05 AM
To: [EMAIL PROTECTED]
Subject: winvncdrv & NT4


Thanks, Got the driver working well under NT4.  it did seem to be running
slow thou (using JPEG & JPEG B&W). I wil do some more conclusive tests, as
it may have been the system I was testing it on (I did not have a huge
amount of time).

What would be REALLY cool, if Constantin & yourself got together, and made
a "UltimateVNC", combining your excellent driver and plugin encancements,
and Constantin's TightVNC code (which IMHO is a better VNC than the atd
AT&T offering)...

What would be a even better idea, would be to intregrate all these VNC
enchancements into a single VNC, using the OpenVNC project at SourceForge,
as currently we have to choose between either running TightVNC or the
WinVNC driver, We can't have both...

Just my 2p worth

Please don't get me wrong, I really DO appreciate the hard work that
developers like Rudi and Constantin have done, it's just it would SOOO much
better if they were all in the same compatible, platform independant
distribution!!!






This E-mail and any files transmitted with it are in commercial 
confidence and intended solely for the use of the individual or entity
to whom they are addressed. If you have received this E-mail in error 
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Any views or opinions expressed are solely those of the author and do
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RE: Unable to cooperate at same desktop ?

[Sharma, Shashi]

Run Xvnc with option -alwaysshared
 -- or --
Before connection to the server clicked the shared checkbos form connection
option dialog box


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 12, 2002 4:38 PM
To: [EMAIL PROTECTED]
Subject: Unable to cooperate at same desktop ?


The introduction of VNC says:
"One desktop can be displayed and used by several viewers at once, allowing
CSCW-style applications."

I install VNC on linux(at x86 machine) and try to connect to vncserver from
two computers to the same desktop(for example display is 2).
But I only can connect by one, the other will be kick out when next one
connect to the same desktop...
Do I misunderstand the introduction sentence  ?

?`)w&(Ericlai
3P7N9q$l*Q%w&3--$=%qGlobal Unichip Corp.
7s&K,l>G6i0O,c5o$G8t$Ghttp://www.uk.research.att.com/vnc/intouch.html
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RE: Remote Desktop Reviews

[Sharma, Shashi]

I would be very suprised if Konqueror runs ActiveX plugin. ActiveX is not
code neutral ie it doesnt uses bytecode so it should not be able to say take
ActiveX from Win32 platform and run  unmodified in linux platform. just my
2p
-shashi

-Original Message-
From: Alex K. Angelopoulos [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 13, 2002 9:18 AM
To: [EMAIL PROTECTED]
Subject: Re: Remote Desktop Reviews


Gabor, I think a writer that would sum up VNC with

"WinVNC is strictly for techies with a masochistic bent"

is going to miss a lot of things...:)

Interestingly enough,  pcAnywhere has asymmetric support but has
soft-pedaled it.  They developed   Java and an ActiveX clients in 1997 which
were put onto their CDs - and they have since done zero development.  AFAIK,
they still distribute the ActiveX/Java clients on every CD.

Timbuktu, in contrast, requires a client - a "light" one, but a preinstalled
client nonetheless.  This makes them relatively unusual in the field since
Citrix, Windows Terminal Services, and PCI NetSupport as a comparison all
offer ActiveX client controls which can be downloaded R/T from the server
into IE an even I believe Konqueror on Linux. (Could someone set me straight
on the last? I understand Konqueror has ActiveX support implemented, but I'm
not sure how far it goes).


FYI, anyone who has to connect to a variety of systems remotely may be
interested in taking a look at the Tier6 package I put together.  It only
works on platforms with Internet Explorer 5+ supporting ActiveX :( at
present.  It allows rapid integrated connections via IP to VNC, Citrix,
pcAnywhere, Windows Terminal Services, and PCI NetSupport hosts.  The URL
is:
http://sourceforge.net/projects/puddleby/



- Original Message -
From: "Gabor D. Kiss" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, 2002-03-13 10:21
Subject: Re: Remote Desktop Reviews


: Thanks for this posting. However the article misses the #1 pro for vnc in
: my mind, that it is asymmetrical. The remote machine doesn't need any
: particular software, just a web browser. Only the controlled machine needs
: to run vnc. Can any of the commercial packages do that? (Maybe they can
and
: the article missed that too?)
:
: Gabor
:
:
:
: Roger Pray
: cc: (bcc: Gabor D.
Kiss/Telcordia)
:   Subject: Remote Desktop
Reviews
: 03/13/2002
: 09:45 AM
: Please respond
: to vnc-list
:
:
:
:
:
:
:
: I haven't seen this anywhere in the emails, but a friend of mine
: forwarded me this link regarding remote dekstop software.
:
: I do like the description of "WinVNC is strictly for techies with a
: masochistic bent" - fairly accurate in my mind.  But I do love WinVNC.
:
: Enjoy the read.
:
: http://www.pcworld.com/reviews/article/0,aid,85863,tk,prx,00.asp
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RE: winvncdrv & NT4

[Sharma, Shashi]

Hi, 
I was able to install the driver. 
After running the install program. 
1. Open Control Panel->Display
2. Click on Settings tab and Display Type.
3. Click Change and Have Disks. Browse to the direcctory where you installed
the program
and proceed to install the driver.
4. After you have installed the driver double click on reg2.reg file in the
install directory
5. Open regedit and modify the following registry
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Hardware
Profiles\Current\CurentControlSet\
Services\vncdrv\Device0
Attach.ToDesktop = 1
DefaultSettings.BitsPerPel = (The value from your video driver which is
HKEY\yourvid\Device0. Read the file readme2.txt)

DefaultSettings.XResolution = As above
DefaultSettings.YResolution = As above

Reboot the machine. It should be working now.
-shashi

-Original Message-
From: Jacob Hoover [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 13, 2002 12:13 PM
To: [EMAIL PROTECTED]
Subject: RE: winvncdrv & NT4


I get the same error.

I think I am stuck at the :
add new hardware/video/select vncdrv.inf (you should see a second video
mirror driver)

There is no add new hardware for WinNT.

Jake

-Original Message-
From: Sharma, Shashi [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 11, 2002 3:44 PM
To: '[EMAIL PROTECTED]'
Subject: RE: winvncdrv & NT4


Installed the driver(NT4) and followed all the instructions. On the bootup
no errors are displayed  but when making the connection from a normal
vncviewer (tightvnc) the server pops up the message box "No video driver
detected\This version is winvncdrv only"
Any idea what is causing the error.

-shashi

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 11, 2002 4:05 AM
To: [EMAIL PROTECTED]
Subject: winvncdrv & NT4


Thanks, Got the driver working well under NT4.  it did seem to be running
slow thou (using JPEG & JPEG B&W). I wil do some more conclusive tests, as
it may have been the system I was testing it on (I did not have a huge
amount of time).

What would be REALLY cool, if Constantin & yourself got together, and made
a "UltimateVNC", combining your excellent driver and plugin encancements,
and Constantin's TightVNC code (which IMHO is a better VNC than the atd
AT&T offering)...

What would be a even better idea, would be to intregrate all these VNC
enchancements into a single VNC, using the OpenVNC project at SourceForge,
as currently we have to choose between either running TightVNC or the
WinVNC driver, We can't have both...

Just my 2p worth

Please don't get me wrong, I really DO appreciate the hard work that
developers like Rudi and Constantin have done, it's just it would SOOO much
better if they were all in the same compatible, platform independant
distribution!!!






This E-mail and any files transmitted with it are in commercial
confidence and intended solely for the use of the individual or entity
to whom they are addressed. If you have received this E-mail in error
please notify the Administrator by E-mail ([EMAIL PROTECTED]).

Any views or opinions expressed are solely those of the author and do
not necessarily represent those of DEK Printing Machines Ltd., or its
affiliates.


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RE: Locale - Solaris 2.7 and VNC

[Sharma, Shashi]

Try the following; it works in my machine
Add 
-fp
"/usr/openwin/lib/X11/fonts/F3bitmaps/,/usr/openwin/lib/X11/fonts/Type1/,/us
r/openwin/lib/X11/fonts/Speedo/,/usr/openwin/lib/X11/fonts/misc/,/usr/openwi
n/lib/X11/fonts/75dpi/,/usr/openwin/lib/X11/fonts/100dpi/" 

to your Xvnc command line.
In the fontpath the directory should enter with forward slash. Also,
TrueType font cannot be loaded by Xvnc(someone correct me if i am wrong).
They are loaded through xfstt (true type font server).
-shashi

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 14, 2002 4:11 AM
To: [EMAIL PROTECTED]
Subject: Locale - Solaris 2.7 and VNC


Hi,

I've been having several problems getting VNC up and running on Solaris 
2.7.  It works fine with Solaris 2.6.  I've tracked the problem down to 
the locale settings, when upgrading to 2.7 I have set the default locale 
to the new 'Euro' locale (en_GB.ISO8859-15) rather than the old en_UK 
locale.  If at the CDE desk top I use the language option to en_GB I can 
run the server sucessfully.  'Otherwise when the windows manager starts up 
(I'm using olwm) I get a fatal error -- Could not find any fonts to use. 
Exiting'.

Setting the font path manually doesn't work, because I then find the that 
two fonts:-

/usr/openwin/lib/local/iso_8859_15/X11/fonts/TrueType
/usr/openwin/lib/X11/fonts/F3

will not load (font path cannot be set error).

Based on this I reached the conclusion that if I set the olwm -basiclocale 
to en_GB.  But when I do this I start to get errors regarding the lack of 
certain font sets.  If I set the basic locale to en_UK then I just get a 
general not fonts to use error.

What is it about the new fonts that vnc doesn't like?  Is there a way to 
force my windows manager to use the en_GB locale correctly even when the 
desktop is running a different locale?  Any suggestions would be welcomed.

Regards,

Bernard McAuley,
Mindspeed Technologies,
Floor 17,
Castlemead,
Lower Castle Street,
Bristol,
BS1 3AG,
UK
Telephone: +44 (0) 117 930 2476
Fax: +44 (0) 117 930 2401
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RE: Unable to run application

[Sharma, Shashi]

How are you running Xvnc ? If you are not running through xdm then you have
to manually add the font through -fp command line argument. Check the file
/usr/dt/bin/Xsession on how its done in the normal setup.
-shashi

-Original Message-
From: Firas Barakat [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 14, 2002 7:27 AM
To: [EMAIL PROTECTED]
Subject: Unable to run application


Hi again,
 
When I try to run my application, I get the following message:
 
Error: Failed to initialize tcl interpreter
font "-dt-interface user-medium-r-normal-l*-*-*-*-*-*-*-*-*" doesn't exist
 
My workstation is Solaris 8, and it seems to me that VNC is unable to read
is
8895-1 fonts..
 
Thank you,
 
Kind regards,
 
Firas

=

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RE: Window size...

[Sharma, Shashi]

If you are using tightvnc server then you can scale the window to anything
you want. Right click on the vncviewer window and select connection option
-shashi

-Original Message-
From: John Schultz [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 14, 2002 7:53 AM
To: [EMAIL PROTECTED]
Subject: Window size...


How can I make the viewer window larger (Windows 2000 version)?

It's kind of small and the resize is disabled.

___
John Schultz 
Systems Architect 
Phone: 713-839-3034
Office: BMC 4.654A
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RE: Win2k shared registry setting

[Sharma, Shashi]

Check the ConnectPriority setting in the VNC documentation.
-shashi

-Original Message-
From: Jeff Wood [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 14, 2002 2:32 PM
To: [EMAIL PROTECTED]
Subject: RE: Win2k shared registry setting


I know this has been posted before but I do not seem to be able to find it.
I need the registry setting information to have multiple sessions on my
win2k server.

Thanks in advance for the help.

Jeff
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RE: How can I use PsuedoColor

[Sharma, Shashi]

You the commandline option -cc 3


-Original Message-
From: Morrison Davis [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 18, 2002 3:17 PM
To: [EMAIL PROTECTED]
Subject: How can I use PsuedoColor


How can I force my vncserver to use PsuedoColor instead of TrueColor.


Thanks Morry
e-mail address: [EMAIL PROTECTED]
phone: X84792/650 786-4792 fax 650 562-2143
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RE: The Next Generation display numbers

[Sharma, Shashi]

If Xvnc uses one port for RFB then with the current implemenation it wont be
possible to open two display from Xvnc.


-Original Message-
From: Michael Ossmann [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 20, 2002 8:52 AM
To: [EMAIL PROTECTED]
Subject: Re: The Next Generation display numbers


On Wed, Mar 20, 2002 at 10:38:40AM -0500, Grant McDorman wrote:
>
> The problem is that VNC, on *nix systems, will always use a display
> number for access by applications. If one drops the display number for
> the VNC client connections, then we'll have *two* unrelated IDs for
> the VNC server - the display number, and the VNC ID, whatever that
> might be (port perhaps?).

We already have that.  A typical Xvnc listens for X apps on :1 and also
listens for VNC clients on :1, where :1 and :1 are two completely
different things.  :-/

It's even possible, though rare, to have Xvnc use completely different
display numbers for X and RFB, which could be incredibly confusing to
someone who doesn't understand the difference between :1 and :1.  And
the system breaks down completely if you have 100+ displays.

It would be a lot less confusing if all VNC implementations used a
single port for RFB.  Xvnc would still have an X display number, but
anyone using X can be expected to figure that out.

The current system only makes good sense on one platform, and it doesn't
scale.

> I agree it doesn't make much sense in the Windows-only world; however,
> when connecting to *nix systems (from any system) it does make sense,
> and (in my opinion) should not be removed.

In a VNC implementation with a single port serving multiple displays,
each display would still need some kind of identifier, and it would make
sense for Xvnc to continue to use the X display number for that purpose.
It would even work with display numbers > 99, which would be refreshing.

> Perhaps what we need is a way to explicitly specify the VNC port (the
> 580x/590x) on both the client and server. Connections to non-*nix
> systems could then use that.

That would be nice too.  Xvnc currently has command line options with
which you can specify either port number or display number.  It would be
nice if other implementations had that feature as well.

-- 
Mike Ossmann, Tarantella/UNIX Engineer/Instructor
Alternative Technology, Inc.  http://www.alttech.com/
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RE: Limiting the Remote View

[Sharma, Shashi]

Application sharing, instead of full desktop sharing feature was implemented
by Celine Ferage(sp?) as a patch. I think TightVNC will be including this
patch in the next release

-Original Message-
From: Alex K. Angelopoulos [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 22, 2002 9:57 AM
To: [EMAIL PROTECTED]
Subject: Re: Limiting the Remote View


That wasn't a serious idea for someone to easily implement... :)

AFAIK, there is no way to do this with WinVNC.

- Original Message -
From: "Marc Bertone" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, 2002-03-22 12:36
Subject: RE: Limiting the Remote View


: I think that would work, but adding the intermediate step would be a
: problem.  Basically, we are looking for usage in the support
arena...someone
: could connect to my computer (when I send them the URL and password in
their
: browser).  Once they have connected I want them to watch my IE window, but
: not see all my other stuff at the same time.  So many ideas!!!
:
: -Marc
:
: -Original Message-
: From: [EMAIL PROTECTED]
: [mailto:[EMAIL PROTECTED]]On Behalf Of Alex K.
: Angelopoulos
: Sent: Friday, March 22, 2002 8:27 AM
: To: [EMAIL PROTECTED]
: Subject: Re: Limiting the Remote View
:
:
: I don't know about weird but definitely novel and *ugly*...an
: interesting hack.
: - Original Message -
: From: "Adrian Umpleby" <[EMAIL PROTECTED]>
: To: <[EMAIL PROTECTED]>
: Sent: Friday, 2002-03-22 11:15
: Subject: Re: Limiting the Remote View
:
:
: : On Friday, March 22, 2002, at 03:23 PM, Marc Bertone wrote:
: :
: : > I was wondering if there is some way to limit the remote view when
: : > someone
: : > connects via their browser.  For example, could I only allow the
remote
: : > client to see my IE window, foremost window, CMD console, etc?
: : > Basically, I
: : > would like to selectively share only a part of my desktop while the
rest
: : > would remain hidden to the (view only) viewer.
: :
: : One possible (rather wierd and wasteful of screen real-estate) way to do
: : this,
: : if the region of the screen you want to show does not move, is to go
: : through a
: : secondary vnc server. (Perhaps an Xvnc server would be best, so it does
: : not use
: : up another real screen.)
: :
: : What you would do is have a vncviewer open on the intermediate box,
: : showing
: : the whole screen of your first Windows machine. Then open up some other
: : blank
: : windows and obscure the parts of the view you don't want seen. You can
: : then
: : advertise this second machine as the one which others connect to.
: :
: : i.e:
: :
: : ++   +-+
: : ||   |  ++ |
: : | MS Win |--WinVNC---+->|VNCviewr| |--Xvnc?-->  View-only viewer
: : ||   |+---+|
: : ++   || obscurer  ||
: :   |+---+|
: :   +-+
: :
: : Get the idea? (Hey, I did say it was weird...)
: :
: : Adrian
: : -
: : To unsubscribe, mail [EMAIL PROTECTED] with the line:
: : 'unsubscribe vnc-list' in the message BODY
: : See also: http://www.uk.research.att.com/vnc/intouch.html
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RE: need for SetHook

[Sharma, Shashi]

Its in vnchooks.dll. the function is defined in vnchooks.cpp.
This allow hooking into window message loop and getting the screen update
information.



-Original Message-
From: Jasmeet S. Virdi [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 26, 2002 2:24 AM
To: [EMAIL PROTECTED]
Subject: Re: need for SetHook


Opps sorry , forgot the file name => vncDesktop.cpp ..

-js
- Original Message -
From: "Jasmeet S. Virdi" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, March 26, 2002 3:30 PM
Subject: need for SetHook


: Hi all,
: Was just going thru the WinVNC code and realised a statement which i
: cudn't make much sense of, or i cud not find utility for that ..
: LINE 349
:
: if (!SetHook(
:   m_hwnd,
:   RFB_SCREEN_UPDATE,
:   RFB_COPYRECT_UPDATE,
:   RFB_MOUSE_UPDATE
:   ))
:  {
:   log.Print(LL_INTERR, VNCLOG("failed to set system hooks\n"));
:   // Switch on full screen polling, so they can see something, at least...
:   m_server->PollFullScreen(TRUE);
:  }
:
: y do we really need this !!
: Wud some body be kind enuf to shed some light on it !!
: thanx in advance..
: -js
:
:
:
: - Original Message -
: From: "Fred" <[EMAIL PROTECTED]>
: To: <[EMAIL PROTECTED]>
: Sent: Tuesday, March 26, 2002 12:38 PM
: Subject: Re: Where is Tightvnc 1.2.3; also, compile problems
:
:
: : I found that depending on whether I was behind a firewall,
: : I am accessing a cached copy of the TightVNC website.
: : It might help to browse to a different page, then clear
: : caches on disk and in memory.  Sometimes, not even this
: : helps, presumably because some intermediate machines
: : insist on serving a cached copy.  Rumour has it that
: : on netscape, a shift-Reload is a request for an uncached
: : copy of a page, but I also seem to recall that respecting
: : that request is not an official part of any protocol standard.
: :
: : Some problems encountered compiling using
: : gnu make and gnu cc on solaris 8 (sorry, I
: : didn't note the particulars and the file as it was
: : really late and I ended up going back to 1.2.2, so
: : this is from memory).  I was compiling with
: : zlib libraries.
: :
: : 1.  One of the make files has CC hardcoded to a
: : nongnu compiler, I think it's /usr/ucb/cc.
: : Commenting this out allowed the make file to
: : inherit the gcc program path from the parent
: : make file.  Otherwise, the non-gnu compiler
: : chokes on syntax in one of the make files.
: :
: : 2.  In sun.cf, I defined AsmDefines as null because one
: : of the commands in a makefile was interpretting
: : AsmDefines as a file name.  In various other *.cf
: : files, AsmDefines is defined as a platform-dependent
: : command line switch.
: :
: : 3.  A number of labels couldn't be found,
: : referenced from 4 different *.o files within a *.a
: : file.
: :
: : Sorry for the vagueness, but hopefully anyone else
: : encountering these will recognize them.  Maybe even
: : confirm that #2 was properly handled or not, and
: : maybe even find the fix for #3.
: :
: : Fred
:
: --
: : Fred Ma
: : Department of Electronics
: : Carleton University, Mackenzie Building
: : 1125 Colonel By Drive
: : Ottawa, Ontario
: : Canada K1S 5B6
: : [EMAIL PROTECTED]
: :
==
: : -
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Xvnc + XIE

[Sharma, Shashi]

I took the tightvnc code and modified config/cf/vnc.cf 
#define BuildXIElib YES
Added the XIE directory from XFree86 3.3.2 src tree to the Xvnc tree and
build it.
I was able to compile everything cleanly but when I run Xvnc,  the xdpyinfo
does not show XIE extension. What else I have to do to make enable the  XIE
extension ? 
Maybe, I am doing something really stupid I dont know much abt XServer code
so thats a strong possibility. 
If you can give me some pointers that will be very helpful. 
Thanks
-shashi 

-Original Message-
From: Roger Pray [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 29, 2002 7:51 AM
To: vnclist
Subject: Novell and VNC


Has anyone ever experienced any issues with VNC and Novell networks?  We
have noticed a few of our outlying locations on our Wan seem to be
running extremely slow on running the Novell login script.

These PC's are Celeron 500MHz+, 128MB Ram+ - and the only major change
has been adding VNC.

Any information is appreciated.

Thanks.

Roger
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RE: winvncdrv speed....Alfa Testversion available.

[Sharma, Shashi]

Thanks Rudi.
I will wait for the  NT version. (thats my primary platform). When do you
think the NT version will be available ?
Thanks again 

-shashi


-Original Message-
From: De Vos Rudi [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 01, 2002 4:52 PM
To: [EMAIL PROTECTED]
Subject: winvncdrv speedAlfa Testversion available.


Hi all,

New alfa update available http://services.simac.be/vnc/winvncdrv/sources

Acc_vncw2k32bpp.exe

Finally the blit part is eliminated from the vncserver, the video driver
provides the update rectangles and bitmap data.
This gives a big speed boostand looower cpu.
Most of the solid rectangles are driver detected ..eliminated for
checking  by vnc.
The hookdll is no longer needed.
Driver is auto loaded on client start, and unloaded on client
logout.(screen is reset 640x480 256 and back to old settings)

Test version.  (32bpp)
The driver is running stable "I didn't had any more blue screens the
last days", but
there changed a lot insite the driver. Use with care..
It only works when the server is in 32bpp mode, for the other bpp the
screen is messed up.

PIII 1Ghz ati rage pro 128 (tested in loopback mode)
server (5-20% cpu)
viewer (30-50% cpu)
media player (50-70% cpu)

The viewer sometimes take  10x  the amount the server use (loopback)
?
Can someone do some test on low bandwidth...
Bugs.


Greetings
Rudi
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RE: Max. number of clients per Xvnc display window [?]

[Sharma, Shashi]

In the Xvnc code, find the file where function main() is defined and add the
following lines
- begin 
struct rlimit rlp;
rlp.rlim_cur = 2;
rlp.rlim_max = 2;


int ret = setrlimit(RLIMIT_NOFILE, &rlp);
if ( ret < 0 ) {
perror("Error in setrlimit");
}
- end ---
Compile Xvnc and this should allow more no of clients. 
-shashi


-Original Message-
From: Richard L. Hamilton [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 02, 2002 12:41 PM
To: [EMAIL PROTECTED]
Subject: Re: Max. number of clients per Xvnc display window [?]


>Hello.
>
>Recently, we replaced Sun's standard X display server with Xvnc.  The
reason
>was that,
>even with the latest Sun patches, we could display no more than 45 clients
>on :0 on
>Sun's X display server before it would refuse new clients with "Maximum #
of
>clients
>reached" errors.  We verified this via an xterm loop shell script.  This
>despite the
>fact that we learned that the standard maximum number of X clients is 128.

Haven't looked at the Xvnc source yet.  But there are a number of things
that might compose such a limit.

* a hard-coded limit

* the file descriptor limit (need one per XOpenDisplay, plus one per
  screen, plus one per hardware input device, plus one to just listen on
  each type of connection (local - of possibly more than one flavor,
network),
  plus maybe a few more

* max stack depth

* sufficient vm

See
http://www.sunmanagers.org/pipermail/sunmanagers/2001-September/006231.html
for a way to increase the number of clients on Xsun.  Basically, you add
   -clients 1024
to the command line for Xsun.  128 is also a valid value, not sure if
anything
else is.  I think this trades off against something else, i.e. increasing
number of clients decreases some other thing like maybe number of atoms or
max number of properties or something like that.


-- 
ftp> get |fortune
377 I/O error: smart remark generator failed

Bogonics: the primary language inside the Beltway

mailto:[EMAIL PROTECTED]  http://www.smart.net/~rlhamil
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RE: Max. number of clients per Xvnc display window [?]

[Sharma, Shashi]

This is a C++ code so it wont compile in Xvnc. You have to define the
variable at the beginning of function and include the appropriate header
file.
-shashi

-Original Message-
From: Sharma, Shashi [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 02, 2002 1:08 PM
To: '[EMAIL PROTECTED]'
Subject: RE: Max. number of clients per Xvnc display window [?]


In the Xvnc code, find the file where function main() is defined and add the
following lines
- begin 
struct rlimit rlp;
rlp.rlim_cur = 2;
rlp.rlim_max = 2;


int ret = setrlimit(RLIMIT_NOFILE, &rlp);
if ( ret < 0 ) {
perror("Error in setrlimit");
}
- end ---
Compile Xvnc and this should allow more no of clients. 
-shashi


-Original Message-
From: Richard L. Hamilton [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 02, 2002 12:41 PM
To: [EMAIL PROTECTED]
Subject: Re: Max. number of clients per Xvnc display window [?]


>Hello.
>
>Recently, we replaced Sun's standard X display server with Xvnc.  The
reason
>was that,
>even with the latest Sun patches, we could display no more than 45 clients
>on :0 on
>Sun's X display server before it would refuse new clients with "Maximum #
of
>clients
>reached" errors.  We verified this via an xterm loop shell script.  This
>despite the
>fact that we learned that the standard maximum number of X clients is 128.

Haven't looked at the Xvnc source yet.  But there are a number of things
that might compose such a limit.

* a hard-coded limit

* the file descriptor limit (need one per XOpenDisplay, plus one per
  screen, plus one per hardware input device, plus one to just listen on
  each type of connection (local - of possibly more than one flavor,
network),
  plus maybe a few more

* max stack depth

* sufficient vm

See
http://www.sunmanagers.org/pipermail/sunmanagers/2001-September/006231.html
for a way to increase the number of clients on Xsun.  Basically, you add
   -clients 1024
to the command line for Xsun.  128 is also a valid value, not sure if
anything
else is.  I think this trades off against something else, i.e. increasing
number of clients decreases some other thing like maybe number of atoms or
max number of properties or something like that.


-- 
ftp> get |fortune
377 I/O error: smart remark generator failed

Bogonics: the primary language inside the Beltway

mailto:[EMAIL PROTECTED]  http://www.smart.net/~rlhamil
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RE: vnc via ssh forwarding problem

[Sharma, Shashi]

ssh -L 5901:linux2:5901 linux2
the above line should have two differnet number for two ports??
something like 
ssh -L 5901:linux2:5902 linux2
Just wondering. 
-shashi


-Original Message-
From: Tianjie Gao [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 02, 2002 6:11 AM
To: [EMAIL PROTECTED]
Subject: vnc via ssh forwarding problem


hi, 
I try to use vncviewer from linux1 to access linux2 running vncserver 
through ssh forwarding. This is what I do:

linux2> vncserver
..

linux1> ssh -L 5901:linux2:5901 linux2
linux1> vncviewer localhost:1
..

then I am prompted for the vnc password, but after the authentication I 
only see a white window with a dot for the mouse on linux1. The following 
is the log message on linux2:

01/04/02 21:08:09 Got connection from client 127.0.0.1
01/04/02 21:08:09 Protocol version 3.3
01/04/02 21:08:14 Pixel format for client 127.0.0.1:
01/04/02 21:08:14   32 bpp, depth 24, little endian
01/04/02 21:08:14   true colour: max r 255 g 255 b 255, shift r 16 g 8 b 0
01/04/02 21:08:14 Using raw encoding for client 127.0.0.1
01/04/02 21:08:31 rfbSendUpdateBuf: write: Broken pipe
01/04/02 21:08:31 Client 127.0.0.1 gone
01/04/02 21:08:31 Statistics:
01/04/02 21:08:31   framebuffer updates 1, rectangles 1, bytes 3145740
01/04/02 21:08:31 raw rectangles 1, bytes 3145740
01/04/02 21:08:31   raw bytes equivalent 3145740, compression ratio 1.00

Did anyone experienced the same problem and have fixed it?

tianjie
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RE: How viewer state is saved for later restoration

[Sharma, Shashi]

VNCViewer --
Reads the graphics update from the server and paint it on the local screen
and send the keyboard and mouse event to server.
VNServer:
Stores all the state of the display. It is stored whether you do
connect to the server or not


Lets create 1024x768 memory buffer and whenever application want to draw I
will update the memory. So at anypoint in time If i deliver the memory
buffer to the vncviewer the viewer will see the full desktop in the current
state. 
Now you connect to the server at some point in time and do something with
it. The memory buffer is updated and you see the update on your viewer. You
disconnect from the server. The vncserver will merely stop you sending the
update but the applications are running and they may be updating the buffer.

You connect at some other point to the vncserver, vncserver will send you
thefull copy of the memory buffer again and you again see the desktop. 

Coming to your question, vncserver stores all the graphic state in the
memory buffer  which is always available to the application (x client) no
matter whether one is conencted of not. 
THERE IS NO VIEWER STATE.  Nothing is happening on the viewer, which gets
the update from the server and send the event.
Hope that clears your doubt.
-shashi 

-Original Message-
From: Cham Mama [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 04, 2002 11:32 AM
To: [EMAIL PROTECTED]
Subject: How viewer state is saved for later restoration


Hi

May be my question yesterday was confusing to many.
Here I am putting in a different way.

1. I connect to a VNC Server from my office Desktop
2. Then I start some application and start editing a
mail... Then I leave in the middle of the mail
editing.
(I am assuming that whatever application I am running
is being stored in the VNC server)

3. Now I connect from Home Desktop to the same VNC
Server.
4. As per VNC's document, I should be able to see the
mail editing application being started so that I can
complete the editing.

So my question is, where is the VNC code which
remembers the viewers' state, so that when I connect
from Home, gives the same desktop (i.e restore the
same desktop to that of the Office Viewer, with all
the opened applications at that time) to the new
viewer ?

Hope the question is clear this time.

Chandra

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RE: Question on viewing the desktop

[Sharma, Shashi]

Maybe he is using bourne shell. :)
in which case you have to use $HOME instead of ~
cd $HOME
cd .vnc
etc

-shashi

-Original Message-
From: Mike Miller [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 08, 2002 2:31 PM
To: [EMAIL PROTECTED]
Subject: RE: Question on viewing the desktop


On Mon, 8 Apr 2002, Mithrilhall2000 wrote:

> Where do you find "~/.vnc/xstartup"? I have looked but cannot find it.

Are you a unix person?  '~' is your home directory.  Try this:

cd ~
cd .vnc
ls

do you see xstartup?

Should see it this way too:

ls ~/.vnc/xstartup

Mike


> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]] On Behalf Of Beerse, Corni
> Sent: April 8, 2002 2:12 AM
> To: '[EMAIL PROTECTED]'
> Subject: RE: Question on viewing the desktop
>
>
> > -Original Message-
> > When I start vncviewer from Windows XP and connect to my Mandrake 8.1
> > box I get the grey screen with the X as well as a shell window open.
> > How can I get the desktop to open inplace of the shell window?
>
> THE desktop of the console cannot be captured (with vnc). There are 2
> general routes to get a desktop on your vncviewer window:
>
> Edit ~/.vnc/xstartup to start a window manager. By default `twm` is
> started, this can be changed to any other window manager or desktop
> manager.
>
> The other option is to setup a vnc-login construction as on
> http://www.sourcecodecorner.com/articles/vnc/linux.asp. This will give
> you about the same session as at the console.
>
> Success
> CBee
>
>
> >
> > Thanks,
> > Mithrilhall
> >
> >
> >
> > _
> > Do You Yahoo!?
> > Get your free @yahoo.com address at http://mail.yahoo.com
> > -
> > To unsubscribe, mail [EMAIL PROTECTED] with the line:
> > 'unsubscribe vnc-list' in the message BODY See also:
> > http://www.uk.research.att.com/vnc/intouch.html
> > -
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>
>
>
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VNC on VMS

[Sharma, Shashi]

Does anyone know if Xvnc was ported to VMS ? 
Some of our tool runs VMS and we need to give them remote capability.
thanks
-shashi
-Original Message-
From: Mithrilhall2000 [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 12, 2002 1:24 PM
To: [EMAIL PROTECTED]
Subject: RE: vncviewer for linux text console??


Do you mean something that is simply a shell window? If so, why not use
ssh?

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Beerse, Corni
Sent: April 12, 2002 1:43 AM
To: '[EMAIL PROTECTED]'
Subject: vncviewer for linux text console??


Hi,


For some whild ideas, I'm looking for a vncviewer that runs at a
pc/linux text console, without the need for an X11 server. The linux
framebuffer may be used.

Is such a viewer available?
Is someone working on such a thing?

Reason: Replacing the X11 (XFree) server with the
Xvnc/console-vnc-viewer provides the same functionallity as the windows
port.

CBee

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mailto:[EMAIL PROTECTED]
talkto:+31(71)5256660
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RE: VDACC-WINVNC, WORKING ON W2K AND NT4

[Sharma, Shashi]

Rudi,
Installed the new driver for NT.
Since I had the older version alerady installed, I just copied the dll to
system32 and sys to system32\drivers.

Some observations
1. The CPU usage is now very low. On an idle screen the CPU goes to 2%.
2. The updates are coming slower than the previous version. On the older
version, if I run wintach(benchmark program), I see more update. The updates
are still coming faster than the AT&T version.

3. The colors on the remote screens are wrong.
Blue -> Green
Green -> Blue
Red -> Red


4. The tightvnc vncviewer performs much better than the version you have on
your site. In your version the remote disllay is flickering but tightvnc
viewer does not flicker.

4. The media player (www.msnbc.com) on the remote viewer, will display the
video for some time on the screen but will go black afterwards.

This version is a vast improvement from the older version.  
Thanks for your effort. Appreciate it.

-shashi



-Original Message-
From: De Vos Rudi [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 12, 2002 6:30 PM
To: [EMAIL PROTECTED]
Subject: VDACC-WINVNC, WORKING ON W2K AND NT4


Hi all,

Finaly got the video driver to work on nt4.

driver for NT4 + install instructions:  vdacc-drivernt41.10.exe
driver for w2k + install instructions: vdacc-driverw2k1.10.exe
winvncserver and viewer: vdacc-vnc1.10.exe
Remember, drivers and vnc version are going together. (shared memory)

Upgrade driver, override old vncdrv.dll and vnchelp.dll (system32),
don't install the driver again.
2 times installing the driver = 2 mirror drivers

The server is compatible with the normal vnc viewers, only you miss some
extra options.

THIS IS STILL  BETA
w2k driver runs a while without blue screens.
nt4 is just finished, take care

Greetings
Rudi
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RE: VNC on VMS

[Sharma, Shashi]

Thanks. That was a good idea. I am thinking of running Xvnc on a sun box and
on VMS setting the display to the sun
on vms
export DISPLAY=sunbox:1
and then running the xapplication. This will solve my problem.
thanks again
-shashi

-Original Message-
From: "Beerse, Corni" [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 15, 2002 12:50 AM
To: '[EMAIL PROTECTED]'
Subject: RE: VNC on VMS


I cannot recal if there is a port. I have seen VMS displays on a vncviewer
with the next construction:

Desktop machine with whatever OS to run vncviewer, unix (linux) machine to
run `vncserver -query `. This gives a vms login session (decsession
?) at the vms machine.

I cannot reproduce the above setup, the machine did not survive Y2K. I only
recall that the vms machine needs to have tcp/ip configured an that it
works.

CBee


--
C. Beerse
mailto:[EMAIL PROTECTED]
talkto:+31(71)5256660


> -Original Message-
> From: Sharma, Shashi [mailto:[EMAIL PROTECTED]]
> Sent: Friday, April 12, 2002 8:07 PM
> To: '[EMAIL PROTECTED]'
> Subject: VNC on VMS
>
>
> Does anyone know if Xvnc was ported to VMS ?
> Some of our tool runs VMS and we need to give them remote capability.
> thanks
> -shashi
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RE: VNC on VMS

[Sharma, Shashi]

I know next to nothing about VMS.I willl try as soon as i get hold of the
machine.
thanks
-shashi

-Original Message-
From: "Beerse, Corni" [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 16, 2002 8:22 AM
To: '[EMAIL PROTECTED]'
Subject: RE: VNC on VMS


> -Original Message-
> From: Sharma, Shashi [mailto:[EMAIL PROTECTED]]
> Thanks. That was a good idea. I am thinking of running Xvnc
> on a sun box and
> on VMS setting the display to the sun
> on vms
> export DISPLAY=sunbox:1

Be sure to use the vms syntax here!!

> and then running the xapplication. This will solve my problem.
> thanks again

What happens if you do on the sun: `vncserver -query vaxmachine`? Does it
give you a Xterminal login at the vax machine?



Success

CBee
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RE: Windows 2000 Machines

[Sharma, Shashi]

Check the following.
1. Is your vnc software on the network drive ?
A service cannot be on the network drive so you got to put in your local
drive.

2. Did you install the vnc and moved the executable or rename the drive ?
In which case you have to run(from the directory where winvnc.exe exitst)
winvnc -remove
winvnc -install
again
-shashi

-Original Message-
From: Cindy Hughes [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 16, 2002 1:00 PM
To: '[EMAIL PROTECTED]'
Subject: Windows 2000 Machines 


I have been trying to get VNC to work on my Window 2000 stations.  I can get
it loaded but it will not run as a service.  I  get the following message
The VNCserver service failed to start due to following error, they system
cannot find the path.  All my 98 machines work great.  Any suggestions?
Thanks.

Cindy Hughes,CCA 
Systems Manager 
Scott Insurance 
1301 Old Graves Mill Road 
Lynchburg, VA. 24502
Email: [EMAIL PROTECTED] 
Phone 434-832-2145 Fax 434-832-2296
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RE: Windows 2000 Machines

[Sharma, Shashi]

I think its a NT/W2K requirement. What happens is 
1. The network drives are mounted when a user logs in.
2. The service starts during bootup at that point there may not be any one
logged in. Even is there is a user logged in his network drive may not be
mapped to the one which was there during installation.



-Original Message-
From: Cindy Hughes [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 16, 2002 1:25 PM
To: '[EMAIL PROTECTED]'
Subject: RE: Windows 2000 Machines 


yes the VNC Software is on a network share.  Is this just a 2000
requirement?  I need to load the software on the local desktop.  No to
number 2.  Thanks 

-Original Message-----
From: Sharma, Shashi [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 16, 2002 4:05 PM
To: '[EMAIL PROTECTED]'
Subject: RE: Windows 2000 Machines 


Check the following.
1. Is your vnc software on the network drive ?
A service cannot be on the network drive so you got to put in your local
drive.

2. Did you install the vnc and moved the executable or rename the drive ?
In which case you have to run(from the directory where winvnc.exe exitst)
winvnc -remove
winvnc -install
again
-shashi

-Original Message-
From: Cindy Hughes [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, April 16, 2002 1:00 PM
To: '[EMAIL PROTECTED]'
Subject: Windows 2000 Machines 


I have been trying to get VNC to work on my Window 2000 stations.  I can get
it loaded but it will not run as a service.  I  get the following message
The VNCserver service failed to start due to following error, they system
cannot find the path.  All my 98 machines work great.  Any suggestions?
Thanks.

Cindy Hughes,CCA 
Systems Manager 
Scott Insurance 
1301 Old Graves Mill Road 
Lynchburg, VA. 24502
Email: [EMAIL PROTECTED] 
Phone 434-832-2145 Fax 434-832-2296
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RE: Antwort: Re: avoid

[Sharma, Shashi]

Right click on VNC icon on the tray and select Close VNC. This will stop the
winvnc service. 
When you want the connection back, start the VNC Server service.


you can write a batch file to do all this
stopconnect.bat
-- cut here ---
@echo off
net stop winvnc
- cut here --
startconnect.bat
-- cut here ---
@echo off
net start winvnc
--- cut here

Create the two batch file and put it in your desktop. 
-shashi


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 17, 2002 5:09 AM
To: [EMAIL PROTECTED]
Subject: Antwort: Re: avoid 


Thank you, Thomas, but: no, sorry, it4s a win2000 server and most clients
also run win2000.

And: I4m not talking about two users connecting via VNC to one server but
about one user who is logged in on the server as normal (windows-)user and
who does not want any incoming vnc-connections at the same time. This case
can4t be handled with the ConnectPriority-Setting.

Tobias



 
thomas.sprinkmeier@ebor.
comAn:
[EMAIL PROTECTED]
Gesendet von:  Kopie:
[EMAIL PROTECTED]   Thema:  Re: avoid
ch.att.com
 
 
17.04.2002 13:40
Bitte antworten an
vnc-list
 
 




In LINUX (an other UNIXes?), see
Xvnc -help

-dontdisconnectdon't disconnect existing clients when a new
non-shared
   connection comes in (refuse new connection instead)

Thomas
> Hello everybody,
>
> is there any way to avoid that a vnc-user connects to a server while
> another user ist logged in working directly on the same server?
>
> Thanks,
>
> Tobias
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>

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RE: vncpasswd for Windows

[Sharma, Shashi]

I dont think you can get the cleartext from the password. 
The file which does the job of authenticating is d3des.c file in the source
code. 

The way it works on the vnc is 
server sends a challenge to client ->16 bytes
client reads the challenget and then encyrpt it with the password
and send back the response. 
Server knows the challenge it sent and then compare it with what it expects



-Original Message-
From: Alex K. Angelopoulos [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 19, 2002 9:06 AM
To: VNC Mailing List
Subject: vncpasswd for Windows


I asked about this over the weekend and didn't get a response at the time
(it
*is* an oddball question).

I'm looking for some info on implementing an equivalent of the Unix
vncpasswd on
Windows.  I can't seem to port the Unix version very easily, even with
substantial changes, probably due to my limited knowledge of C/C++. I'm a
little
curious about the actual algorithm used for the DES3 encryption; I have also
found a *decryption* scheme which works on Windows, but I am having issues
with
un-reversing it and would find it much easier if anyone can point out some
basic
info on how the encryption process is done.
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Single Shared Appliation

[Sharma, Shashi]

Hi Everyone,
I am a newbie to this list and I have a question. I saw this posting in the
archive but didnt see any reply.

[...]
Contribs pages. I have applied all the code to the 3.3.3r7 src, and 
removed the Corba stuff from my project so it will compile, and am now down 
to a problem with the following function: 


HWND fenetre = m_client->m_buffer->GetHwndFn(); 


In Particular, I do not have any function by the name GetHwndFn anywhere 
[...]

The function GetHwndFn() doesnt exist in the vncBuffer class and the
compiler complains about the missing function.

Does anybody know how to fix this problem ?
Thanks in advance
-shashi
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GDI DLL Wrapper

[Sharma, Shashi]

Hi,
I am interested in writing a Wrapper DLL over GDI in order to trap the
graphics update. I am familiar with PE format and have patched few DLLs,
however, I have little idea how will the WinVNC uses this information. 

I propose the following.
1. Write a DLL GDI32.DLL with all the function of MS supplied GDI functions.
2. Each function in the new DLL does the following. Write to a named pipe
the following structure
CARD16 length; //lenght of the structure
CARD32 processID; // process id
CARD32 threadID; // thread ID
BYTE  funcName[SOME_LEN]; // function name
ARGS1 // first argument to the function
ARGS2
...
...
ARGS1, ARG2 are the arugment to the original function. 
3. After writing to the pipe, the function calls the original function from
the MS DLL.

So, if someone is intersted in working on the WinVNC stuff I will help put
up the GDI wrapper DLL.
Thanks
-shashi
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RE: GDI DLL Wrapper

[Sharma, Shashi]

I dont think they are handled even in the original WinVNC code. I have no
idea about DirectX api but I think the same idea can be used by wrapping the
appropriate DLL.

In addition to the idea mentioned in the previous mail, I think I have to
probably send the process/thread  death messages to the WinVNC
-shashi
-Original Message-
From: Andrew Lyon [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 08, 2001 7:13 AM
To: '[EMAIL PROTECTED]'
Subject: RE: GDI DLL Wrapper


What about non gdi updates? Directdraw etc?

-Original Message-----
From: Sharma, Shashi [mailto:[EMAIL PROTECTED]]
Sent: 08 March 2001 15:06
To: '[EMAIL PROTECTED]'
Subject: GDI DLL Wrapper


Hi,
I am interested in writing a Wrapper DLL over GDI in order to trap the
graphics update. I am familiar with PE format and have patched few DLLs,
however, I have little idea how will the WinVNC uses this information. 

I propose the following.
1. Write a DLL GDI32.DLL with all the function of MS supplied GDI functions.
2. Each function in the new DLL does the following. Write to a named pipe
the following structure
CARD16 length; //lenght of the structure
CARD32 processID; // process id
CARD32 threadID; // thread ID
BYTE  funcName[SOME_LEN]; // function name
ARGS1 // first argument to the function
ARGS2
...
...
ARGS1, ARG2 are the arugment to the original function. 
3. After writing to the pipe, the function calls the original function from
the MS DLL.

So, if someone is intersted in working on the WinVNC stuff I will help put
up the GDI wrapper DLL.
Thanks
-shashi
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Registered Office: 
J.O. Sims Ltd 
Pudding Lane 
Pinchbeck 
Spalding 
Lincs 
PE11 3TJ 
Company reg No: 2084187 Vat reg No: GB 437 4621 47 
Tel: +44 (0) 1775 842100 
Fax: +44 (0) 1775 842101 
Web: www.josims.com 
Email: [EMAIL PROTECTED] 

 
The information contained in this e-mail is confidential 
and is intended for the addressee only. The contents of 
this e-mail must not be disclosed or copied without the 
sender's consent. If you are not the intended recipient of 
the message, please notify the sender immediately, and 
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The statements and opinions expressed in this message are 
those of the author and do not necessarily reflect those 
of the company. No commitment may be inferred from the 
contents unless explicitly stated.  The company does not 
take any responsibility for the personal views of the 
author. 

This message has been scanned for viruses before sending, 
but the company does not accept any responsibility for 
infection and recommends that you scan any attachments. 

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RE: GDI DLL Wrapper

[Sharma, Shashi]

So, if I just send the drawing request(like drawline, BitBlt etc)  with the
bounding rectangle then WinVNC would be able to do the rest.
I am intersted to know what would be the performance gains.
-shashi

-Original Message-
From: James ''Wez'' Weatherall [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 08, 2001 3:15 PM
To: '[EMAIL PROTECTED]'
Subject: Re: GDI DLL Wrapper


On Thu, 8 Mar 2001, Sharma, Shashi wrote:

> Hi,
> I am interested in writing a Wrapper DLL over GDI in order to trap the
> graphics update. I am familiar with PE format and have patched few DLLs,
> however, I have little idea how will the WinVNC uses this information. 
> 
> I propose the following.
> 1. Write a DLL GDI32.DLL with all the function of MS supplied GDI
functions.
> 2. Each function in the new DLL does the following. Write to a named pipe
> the following structure
>   CARD16 length; //lenght of the structure
>   CARD32 processID; // process id
>   CARD32 threadID; // thread ID
>   BYTE  funcName[SOME_LEN]; // function name
>   ARGS1 // first argument to the function
>   ARGS2
>   ...
>   ...
> ARGS1, ARG2 are the arugment to the original function. 
> 3. After writing to the pipe, the function calls the original function
from
> the MS DLL.
> 
> So, if someone is intersted in working on the WinVNC stuff I will help put
> up the GDI wrapper DLL.

If you can make the DLL only send data for functions that have been
requested to send hook data, using a set of flag bits, then the idea
sounds reasonable.  I'm not sure how well it will work in practice,
though.  WinVNC is really just interested in knowing when an area of the
display bitmap has been written to (we can leave CopyRect for later).

Cheers,

James "Wez" Weatherall
--
Laboratory for Communications Engineering, Cambridge - Tel : 766513
AT&T Labs Cambridge, UK  - Tel : 343000
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RE: GDI DLL Wrapper

[Sharma, Shashi]

I installed the RAdmin program today. There is no GDI.dll in the system32
directory but the program installs a driver Raddr.dll which loads in Base
group(very early in the boot process).
I am assuming it is  hooking to vga driver and rom the export table one can
see that it is using function from ntoskrnl.exe. 

The other thing is noticed at msdn is that there is an api called
SetWinEventHook and NotifyWinEvent. These APIs looks interesting to me.


-shashi 

-Original Message-
From: Mac Reiter [mailto:[EMAIL PROTECTED]]
Sent: Saturday, March 10, 2001 12:12 PM
To: [EMAIL PROTECTED]
Subject: RE: GDI DLL Wrapper


>> Has anyone looked into SetDDIHook?  It is part of the Active
Accessibility
>
>I asked Microsoft about why a header file for this was missing and they
>said that it is a mistake in the SDK docs - there is no such API.

It isn't part of the Win32 API.  It is part of the Active Accessibility
SDK, like I said.  You can download that SDK at:

http://www.microsoft.com/enable/msaa/download.htm#SDK

The gdi.lib included there has such a function.  The gdi32.lib does not.
This functionality was not in the original 95, and would require that the
redistributable parts of Active Accessibility be installed.

You can write your own header from the documentation given, and then link
against gdi.lib to gain linkage to the actual function.

DWORD CALLBACK DDIHookProc(
  HDDI hddi,
  LONG lPrivateData,
  DDITYPE ddiType,
  LPDDIPARAMS lpDDIStruct
);

WINDDIAPI HDDI WINAPI SetDDIHook(
  HDC hdcHook,
  HMODULE hModCode,
  LONG lPrivateData,
  UINT hookClass,
  DDIHOOKPROC lpfnDdiHook
);

WINDDIAPI DWORD WINAPI CallNextDDI(
  HDDI hddi,
  DDITYPE ddiType,
  LPDDIPARAMS lpDdiParams
);

WINDDIAPI BOOL WINAPI UnhookDDIHook(
  HDDI hddi
);

You'll probably also need the 95/98 DDK (Driver Development Kit) to get
access and documentation for the actual calls that get passed through this
interface.

Since it does not exist in gdi32.lib, I wonder exactly how it works, and if
it actually catches everything.  I bet it catches all GDI calls, but
doesn't catch any of the DirectDraw or WinG calls.  However, the
documentation specifically states that it works in 95 AND 98, so if it was
a "typo" it was the biggest bloody typo I've ever seen.  2000 has a
different system, which I will report as soon as I find the name of it
again, which does the same thing, but in an incompatible way (of course...
They couldn't do the 16 bit DLL thing in 2000).

This system is also available in NT 4, SP4 or higher.

I *strongly* suspect that this interface is what RAdmin uses to gain its
considerable speed.  If you've ever used it, it is frequently hard to tell
that you are at a remote terminal at all.  Of course, it only works for
Win32 to Win32 remoting, and it does cost some money.  But if we could use
this SetDDIHook interface in VNC, we could laugh maniacally as we have
blazing fast remote control of Windows servers from Linux machines.

Mac
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RE: but exactly which part of ftp is possibly unsafe?

[Sharma, Shashi]

I think the unsafe part of the ftp is that it uses  two different ports and
by default one is outbound and the other is inbound. Port 21 is used for
sending ftp commands and the other port(20 by default) is used for actual
data. All client I have seen changes the data port to something else and
that could be a problem with the firewall.

-Original Message-
From: David Rothman [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 13, 2001 6:14 AM
To: [EMAIL PROTECTED]
Subject: but exactly which part of ftp is possibly unsafe?


with all this current ftp discussion and my thread on ftp
from a few weeks ago, i will bring up this question again:

Posed simply, many claim that ftp is 'unsafe', but where is
the risk?  from what i understand, ftp doesn't have any
built in encryption, so to the extent that a file can be
intercepted, it can also be read (unless the user manually
encrypts the file).  If that is the major security concern,
well ok, that at least is something that is manageable.  If,
OTOH, the concern is that a server (to make it simple,
assume one running on a win 2000 pro OS) can be corrupted
and broken in to (meaning one can bypass any password
protection and/or have access to all files on that machine -
not just the restricted zomes) well, that's a much larger
problem.

so, again, in a broad sense, where is the risk and is it a
real or apocryphal?
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RE: problem with installation/use of vnc

[Sharma, Shashi]

I think you have to run the program as root.(There is something in the FAQ
on how to run as nonroot). In any case  try running 
Xvnc : 
directly from the shell as a root.
-shashi


-Original Message-
From: Dave Drager [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 14, 2001 4:35 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: problem with installation/use of vnc


Gerald,

Not positive, but you might want to change your path variable to have
/usr/local/bin first instead of your user bin directory (or now that I think
of it, ./ should be first). Also, have you tried calling Xvnc explicitly IE
/usr/local/bin/Xvnc ?

-Dave

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Gerald Marewo
Sent: Wednesday, March 14, 2001 3:05 AM
To: vnc list
Subject: problem with installation/use of vnc

hi all.

i have just installed vnc 3.3.3 'vnc-3.3.3r2_x86_linux_2.0.tgz' by
just copying the files:

 Xvnc
 vncconnect
 vncpasswd
 vncserver
 vncviewer

to

/usr/local/bin

which of course is in my path; 'echo $PATH' gives:


/home/gerald/bin:/usr/local/bin:/usr/bin:/usr/X11R6/bin:/bin:/usr/openwin/bi
n:/usr/lib/java/bin:/var/lib/dosemu:/usr/games/bin:/usr/games:.:/usr/bin/TeX
:/usr/local/Office40/bin

'uname -a' gives:

   Linux aardvark 2.0.34 #67 Thu Jun 18 17:04:10 MEST 1998 i686 unknown

this is S.u.S.E 5.2 b.t.w. also 'gcc -v' gives

   Reading specs from
/usr/local/lib/gcc-lib/i686-pc-linux-gnulibc1/2.95.1/specs
gcc version 2.95.1 19990816 (release)

in case someone needs to know what version of glibc i have?

the problem is that when i run 'vncserver' i get errors in
~/.vnc/aardvark:1.log: the following is a typical output:

   sh: /home/gerald/bin/Xvnc: No such file or directory
   _X11TransSocketINETConnect: Can't connect: errno = 111
   _X11TransSocketINETConnect: Can't connect: errno = 111

is there any work-around this problem?

i urgently need to get vnc running. i was running an older version
before. it worked fine except for programs like gimp.

any form of help would be greatly appreciated.

regards.

--
Gerald Marewo <[EMAIL PROTECTED]>
"The art of medicine consists in amusing the patient while nature cures
the disease." ~ Voltaire
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RE: problem with installation/use of vnc

[Sharma, Shashi]

It is a security risk but there is a way to run as nonroot. Its somewhere in
the FAQ.
-shashi

-Original Message-
From: Charles Baker [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 14, 2001 7:44 AM
To: [EMAIL PROTECTED]
Subject: RE: problem with installation/use of vnc


Hmmm...I'm running vncserver as a non root user with
no extra steps. Wouldn't running as root be an
unwarranted extra security risk?

--- "Sharma, Shashi" <[EMAIL PROTECTED]>
wrote:
> I think you have to run the program as root.(There
> is something in the FAQ
> on how to run as nonroot). In any case  try running 
> Xvnc : 
> directly from the shell as a root.
> -shashi
> 
> 
> -Original Message-
> From: Dave Drager [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, March 14, 2001 4:35 AM
> To: [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]
> Subject: RE: problem with installation/use of vnc
> 
> 
> Gerald,
> 
> Not positive, but you might want to change your path
> variable to have
> /usr/local/bin first instead of your user bin
> directory (or now that I think
> of it, ./ should be first). Also, have you tried
> calling Xvnc explicitly IE
> /usr/local/bin/Xvnc ?
> 
> -Dave
> 
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf
> Of Gerald Marewo
> Sent: Wednesday, March 14, 2001 3:05 AM
> To: vnc list
> Subject: problem with installation/use of vnc
> 
> hi all.
> 
> i have just installed vnc 3.3.3
> 'vnc-3.3.3r2_x86_linux_2.0.tgz' by
> just copying the files:
> 
>  Xvnc
>  vncconnect
>  vncpasswd
>  vncserver
>  vncviewer
> 
> to
> 
> /usr/local/bin
> 
> which of course is in my path; 'echo $PATH' gives:
> 
> 
>
/home/gerald/bin:/usr/local/bin:/usr/bin:/usr/X11R6/bin:/bin:/usr/openwin/bi
>
n:/usr/lib/java/bin:/var/lib/dosemu:/usr/games/bin:/usr/games:.:/usr/bin/TeX
> :/usr/local/Office40/bin
> 
> 'uname -a' gives:
> 
>Linux aardvark 2.0.34 #67 Thu Jun 18 17:04:10
> MEST 1998 i686 unknown
> 
> this is S.u.S.E 5.2 b.t.w. also 'gcc -v' gives
> 
>Reading specs from
>
/usr/local/lib/gcc-lib/i686-pc-linux-gnulibc1/2.95.1/specs
> gcc version 2.95.1 19990816 (release)
> 
> in case someone needs to know what version of glibc
> i have?
> 
> the problem is that when i run 'vncserver' i get
> errors in
> ~/.vnc/aardvark:1.log: the following is a typical
> output:
> 
>sh: /home/gerald/bin/Xvnc: No such file or
> directory
>_X11TransSocketINETConnect: Can't connect: errno
> = 111
>_X11TransSocketINETConnect: Can't connect: errno
> = 111
> 
> is there any work-around this problem?
> 
> i urgently need to get vnc running. i was running an
> older version
> before. it worked fine except for programs like
> gimp.
> 
> any form of help would be greatly appreciated.
> 
> regards.
> 
> --
> Gerald Marewo <[EMAIL PROTECTED]>
> "The art of medicine consists in amusing the patient
> while nature cures
> the disease." ~ Voltaire
>
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> unsubscribe vnc-list
> to [EMAIL PROTECTED]
> See also:
> http://www.uk.research.att.com/vnc/intouch.html
>
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>
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> http://www.uk.research.att.com/vnc/intouch.html
>
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RE: Question

[Sharma, Shashi]

I have seen this problem too. On Xvnc i fix this problem by giving the
option -deferupdate 0
-shashi

-Original Message-
From: David [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 15, 2001 7:42 AM
To: [EMAIL PROTECTED]
Subject: Question


I have been running VNC over a cable modem via an Ethernet connection to my
computer. I recently obtained a new modem which has both Ethernet and USB. I
switched over to the USB.

I now find that when I call into a host I must move my mouse before my
screen
will update. Did not have this problem with the Ethernet connection.

I've looked through the FAQ's and mailing list but did not find anything.
Any
ideas?

Thanks
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x0rfbserver Compilation Problem

[Sharma, Shashi]

Has anybody tried compiling x0rfbserver ? I am trying to compile on Solaris
with gcc and after numerous twiddling with the Makefile, I was finally able
to compile the source. I am now getting multiple symbols defined errro
during linking.
...
ld: fatal: symbol 'operator new [](unsigned int, void*) is multiply defined:
(file OXAbout.o and file /usr/local/./libgcc.o(new.o));

ld: fatal: symbol symbol 'dec(ios &) ' is multiply defined"
(file OXAbout.o and file OXServiceApplet.o);


-shashi 
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RE: Single window add-on

[Sharma, Shashi]

I had the same problem. And I got this reply from the author which fixed it.



>>
>>[EMAIL PROTECTED] wrote :
>>
>> > Hi Ciline,
>> >
>> > I also fixed the missing problem with GetHwndFn() missing in vncBuffer.

>>The following works for me:
>> >
>> > vncBuffer.h:
>> > 
>> > public:
>> > HWND GetHwndFn();
>> >
>> > vncBuffer.cpp:
>> > --
>> > HWND
>> > vncBuffer::GetHwndFn()
>> > {
>> > return m_desktop->AppliWindow();
>> > };
>> >
>> > Your modifications work great. Thanx!
>> >
>> > Kind Regards,
>> >   Guido
>> >
>> > ---
>> > Dipl.-Inform. Guido Muesch Philips Research Laboratories
>> > Research Scientist Weisshausstrasse 2
>> > Research Group DC  D-52066 Aachen, Germany
>> >
>> >Tel:+49 (0)241 6003 - 516
>> >Fax:+49 (0)241 6003 - 518
>> > E-mail:[EMAIL PROTECTED]
>>
>>--
>>Ciline FAGES
>>SILOGIC
>>http://www.silogic.fr
>>78 chemin des 7 deniers
>>31200 TOULOUSE
>>FRANCE
>>
>>
>

_
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.


-Original Message-
From: James ''Wez'' Weatherall [mailto:[EMAIL PROTECTED]]
..
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RE: Unix $DISPLAY env variable

[Sharma, Shashi]

Actually the authorization checks in XServer is per user.
IF you start Xvnc with -ac option then it will disable authorization checks,
which is equivalent to xhost +

There is one more convoluted way of doing it without -ac option by using  
xauth command. 

-shashi

-Original Message-
From: Alan Conboy [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 12, 2001 9:22 AM
To: '[EMAIL PROTECTED]'
Subject: RE: Unix $DISPLAY env variable


I get the same thing connecting to a linux box. I just do an xhost + when I
first connect, & it will let me open gui's after I su - .
Alan

-Original Message-
From: Brooke Wallace (EWU) [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 11, 2001 2:59 PM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Unix $DISPLAY env variable


Hi,
 
I have run into a problem with my VNC server that I run on Unix.
 
If I su to another user and I want the users environment I use the command
"% su - username".
This asks me then for that users password and sources that users env
scripts, etc.
 
The problem is that my DISPLAY variable does not get set. And if I set the
display variable to one of the following (assuming that the server was
assigned :1 as it's display number):
 
hostname:1.0
:1.0
:1
 
Then I get something like: "xterm Xt error: Can't open display: :1" etc. If
DISPLAY is not set then of course I can't open any Xwindows. And
interestingly enough if I set DISPLAY to hostname:0.0, it opens the window
in my root display (Not the VNC client). It would be fine if I could fix
this using xhost, but I didn't change hosts, just userid.
 
So, my question is.. How do I have to set my DISPLAY env variable to open X
windows if I change my userid? Setting it to the same thing as other windows
in my client have (hostname:1.0) does not work unless I am that user. Is
this some type of security feature, or is it a problem that no one has run
into yet?
 
 
-Brooke
 
Please CC comments to [EMAIL PROTECTED]  
 
BTW- VNC is very cool. I am using it to work from home with my ADSL
connection and find the delay tolerable. I suppose using Xprotocol (like I
expect Exceed does) would speed it up, but then you probably lose the "same
display from anywhere" feature. I am looking forward to trying x2vnx. 
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RE: I connected to my Unix VNC server and I just see a grey deskt op with a cursor.

[Sharma, Shashi]

I dont know whether this will work or not. but  can try editing the file
/usr/dt/config/Xservers
there is one line per xserver 
:0   Local local_uid@console root /usr/openwin/bin/Xsun :0 -nobanner



-Original Message-
From: maurat gerard [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 03, 2001 8:56 AM
To: VNC
Subject: I connected to my Unix VNC server and I just see a grey desktop
with a cursor. 


Hello,

I'm running Xvnc version 3.3.3r2 on a Solaris 2.6.  I successfully set
up it with inetd mode and with multiple ports for different X server
resolutions.

Note: I use a script to start Xvnc from inetd.conf and Xvnc has the SGID

But, i connect on any of these ports and i just see the grey desktop
with my cursor.

I've seen that somebody from the vnc-list uses Xvnc on Solaris.
Please can you explain to me how you execute dtlogin when you connect on
the VNC server?


Thanks a lot
--
Girard MAURAT
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RE: Unix $DISPLAY env variable

[Sharma, Shashi]

try adding  -display hostname:1 to the xhost command


-Original Message-
From: Brooke Wallace [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 12, 2001 11:48 AM
To: [EMAIL PROTECTED]
Cc: Sharma, Shashi
Subject: RE: Unix $DISPLAY env variable




Ok, granted I can say xhost+ and it works, but then I have disabled all my
X security. Starting VNC with -ac also disables all security. Does anyone
know the right command xhost or xauth to add just the user. I have looked
at the man pages and tied a buch of combinations with no success.

xhost +nis:user@
addes access for user 'user', but apparently not for the VNC disaply
host:1.0

xauth generate does not work on my host, and I dont have any key data for
the add command.

-Brooke

Guess Im not an X expert.
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RE: Closing of AT&T Cambridge

[Sharma, Shashi]

A very sad day indeed.
Best of luck for the future. 

-Original Message-
From: Chuck Renner [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 22, 2002 2:04 PM
To: '[EMAIL PROTECTED]'
Subject: Closing of AT&T Cambridge


For those that haven't heard, the AT&T Cambridge Research Lab is closing:

http://www.guardian.co.uk/Archive/Article/0,4273,4398235,00.html

Information on the omniORB list indicates that much of the site content and
the mailing list will be moved to Cambridge University.

Will the same be done with this list?

Thank you to the lab's crew for their work on projects like VNC and omniORB,
especially for releasing them under open licenses, so that the corporate
wrangling that forced the closure of the lab can't destroy the work that was
done.
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RE: VNC for XFree86 4.x

[Sharma, Shashi]

Thanks a lot Alan.
This is what I wanted for a long time. I have a question, does your vncfb
compiles in Solaris ? Is it possible to get the same functionality with the
Xsun ?
-shashi


-Original Message-
From: Alan Hourihane [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 25, 2002 8:37 AM
To: [EMAIL PROTECTED]
Subject: VNC for XFree86 4.x


Just to let everyone know I've ported VNC to the XFree86 4.x 
architecture, and it's a loadable module.

This is a port of the TightVNC 1.2.2 codebase.

There are two scenarios. The traditional Xvnc server supporting the
new XFree86 4 features like RENDER, and the vnc.so module which with
an accompanied modified display driver you can remote manage your
desktop. I've also added a vncfb driver that works the same as Xvnc.

It also supports multihead, although the vncviewer's will need support
adding for this.

Documentation, binaries & source  is available at http://xf4vnc.sf.net.

Contributions are welcome.

Alan.
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RE: VNC for XFree86 4.x

[Sharma, Shashi]

Wasnt that porting kit  only for x86 ?
I maybe wrong here but the vncfb shouldnt be using any hardware specific. Am
i wrong ?

shashi
-Original Message-
From: Alan Hourihane [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 25, 2002 2:14 PM
To: [EMAIL PROTECTED]
Subject: Re: VNC for XFree86 4.x


On Thu, Apr 25, 2002 at 11:46:32AM -0400, Sharma, Shashi wrote:
> Thanks a lot Alan.
> This is what I wanted for a long time. I have a question, does your vncfb
> compiles in Solaris ? Is it possible to get the same functionality with
the
> Xsun ?

I believe Solaris had a porting kit for the XFree86 video drivers. I
understand it should work that that, but no promises.

Alan.
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