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Arjav Parikh | 2 Dec 2006 03:24

how to configure remote access to the machine

Hello there,

I would like to configure VNC as follows:

1) When a specific admin level password is specified, client/web browser can
connect to the machine running server without anyone at the machine to
"Accept"
incoming query.

2) When a viewer or other password is specified, access to view the machine
isn't granted until someone at the machine "accepts" incoming request.

Is there a way to configure tightVNC to meet above requirements?

Thanks much in advance,

Best Regards,
arjav

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Luis.F.Correia | 4 Dec 2006 12:07
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RE: TightVNC Server 1.3.8 is not respecting 'default' password

Hi there,

> -----Original Message-----
> From: Constantin Kaplinsky [mailto:const <at> tightvnc.com] 
> Sent: Thursday, November 30, 2006 2:35 PM
> To: Luis.F.Correia
> Cc: vnc-tight-list <at> lists.sourceforge.net
> Subject: Re: TightVNC Server 1.3.8 is not respecting 
> 'default' password
> 
> Hello everyone,
> 
> >>>>> Luis.F.Correia wrote:
> 
> > Let us know as soon as it is fixed in SVN, so that we can test it.
> 
> It has been fixed in SVN. Also, here are the binaries (WinVNC 
> binaries only, no viewer, no installer etc.):
> 
>      http://www.tightvnc.com/tmp/tvncwinsvr-1.3.8.5.zip
>      (288,857 bytes)
> 
> Please report the results of the testing to the mailing list, 
> do not e-mail me directly if possible.

Preliminary tests show that this problem is now solved.
We will do some more tests this afternood, but so far we are very
confident with the results.

>
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Frank Bax | 4 Dec 2006 19:54
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is VNC too popular?

We use VNC to allow a staff member to access her office computer from 
another office location in the county.  We found out today that the ISP (a 
local wireless enterprise) for that office decided over the weekend to 
block all access to port 5900 (vnc default) because of increased volume of 
traffic hitting their firewall.

After discussions with their tech, we decided that I better change vnc from 
default port, rather than have them open their firewall.  We were able to 
quickly change our system over to another port; and continued on with 
business; but thought others might be interested in this development. 

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Tyran Ormond | 4 Dec 2006 20:06

Re: is VNC too popular?

On 01:54 PM 12/4/2006 -0500, it would appear that Frank Bax wrote:
>We use VNC to allow a staff member to access her office computer from
>another office location in the county.  We found out today that the ISP (a
>local wireless enterprise) for that office decided over the weekend to
>block all access to port 5900 (vnc default) because of increased volume of
>traffic hitting their firewall.
>
>After discussions with their tech, we decided that I better change vnc from
>default port, rather than have them open their firewall.  We were able to
>quickly change our system over to another port; and continued on with
>business; but thought others might be interested in this development.

I highly recommend (as have others in the VNC community) that you 
absolutely not run VNC in the clear across the Internet.  Always run 
it through a tunnel, always.  If you want an easy to setup VPN, use 
Hamachi (www.hamachi.cc).

We run Hamachi on all our remote machines along with a software 
firewall (ZoneAlarm).  We then define the Hamachi address as a 
trusted address and deny the VNC server Internet access.  We then 
have full access  to the machine as if it were parked on our LAN 
(file shares, VNC, the works).

Tyran Ormond
Programmer/LAN Administrator
Central Valley Water Reclamation Facility
ormondt <at> cvwrf.org

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Mauricio Tavares | 4 Dec 2006 20:00
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Re: is VNC too popular?

Frank Bax wrote:
> We use VNC to allow a staff member to access her office computer from 
> another office location in the county.  We found out today that the ISP (a 
> local wireless enterprise) for that office decided over the weekend to 
> block all access to port 5900 (vnc default) because of increased volume of 
> traffic hitting their firewall.
> 
> After discussions with their tech, we decided that I better change vnc from 
> default port, rather than have them open their firewall.  We were able to 
> quickly change our system over to another port; and continued on with 
> business; but thought others might be interested in this development. 
> 
	I feel like I am missing something because I would think you are 
running vnc through a ssh tunnel or some other kind of encryption 
solution. If that is the case, why bother with the vnc port anyway?

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Vincent Bédard-Tremblay | 4 Dec 2006 21:41
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Re: is VNC too popular?

Uhm...are you people tunelling your VNC sessions cuz it's not secure 
enough?  I agree for the VPN tunelling but it always depends of the needs...

Personally, I just change the port and activate a homemade RC4-AES 
encryption channel for the vnc packets.  My ISP is also blocking the 
port but bah...

my 2¢

Mauricio Tavares a écrit :
> Frank Bax wrote:
>> We use VNC to allow a staff member to access her office computer from 
>> another office location in the county.  We found out today that the ISP (a 
>> local wireless enterprise) for that office decided over the weekend to 
>> block all access to port 5900 (vnc default) because of increased volume of 
>> traffic hitting their firewall.
>>
>> After discussions with their tech, we decided that I better change vnc from 
>> default port, rather than have them open their firewall.  We were able to 
>> quickly change our system over to another port; and continued on with 
>> business; but thought others might be interested in this development. 
>>
> 	I feel like I am missing something because I would think you are 
> running vnc through a ssh tunnel or some other kind of encryption 
> solution. If that is the case, why bother with the vnc port anyway?
> 
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Morgan Storey | 6 Dec 2006 07:03
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Re: is VNC too popular?

I would suggest you block it too, and only do through a vpn, ssh tunnel
or some other secure connection. Had a client that had VNC on their
system set with a really weak password, some tech disabled their
personal firewall, they went home out of the safety of their firewalled
network and someone took control of their pc in minutes. Thankfully
nothing was damaged, but it shows you what can happen.

Vincent Bédard-Tremblay wrote:
> Uhm...are you people tunelling your VNC sessions cuz it's not secure 
> enough?  I agree for the VPN tunelling but it always depends of the needs...
> 
> Personally, I just change the port and activate a homemade RC4-AES 
> encryption channel for the vnc packets.  My ISP is also blocking the 
> port but bah...
> 
> my 2¢
> 
> Mauricio Tavares a écrit :
>> Frank Bax wrote:
>>> We use VNC to allow a staff member to access her office computer from 
>>> another office location in the county.  We found out today that the ISP (a 
>>> local wireless enterprise) for that office decided over the weekend to 
>>> block all access to port 5900 (vnc default) because of increased volume of 
>>> traffic hitting their firewall.
>>>
>>> After discussions with their tech, we decided that I better change vnc from 
>>> default port, rather than have them open their firewall.  We were able to 
>>> quickly change our system over to another port; and continued on with 
>>> business; but thought others might be interested in this development. 
>>>
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Michel Rolland | 6 Dec 2006 21:20
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vnc throught routeur

I'm really newbie on VNC.
I use under Linux, I have no particular matters to connect to other pc on the 
home network (apart maybe the fact that I can't re-access to an user because 
i modified some think through the same session that it waq already working to 
the target host, well...), but i din't really understand how to connect from 
the inernet throught the routeur gateway to my host.
thinking I have to use it like that, but i'm not sure:

vncviewer -compresslevel 5 -quality 5 -via 217.194.x.x (my routeur IP) 
169.254.2.7:1 (my host and display address)

If i'm right, it was really kind to anybody to tell or to correct my commande 
line.
And "no", i can't for now trying test from outdoor because I can't move from 
home still for 2 weeks again.
Thanks.
--

-- 
M.Rolland

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James Ortega | 7 Dec 2006 03:32
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Unable to Connect?

Hello All!

This is usually easy to do but for some reason it's
giving me a hard time.

1. remote machine is win2000 sp4.  Service is running
and the icon is 
waiting for connections.  Using default ports

2. local machine connecting to remote is XP., no
firewall enabled.

I'm unable to connect to the remote machine. 
Connection failed either 
in the http or vnc mode.  The password prompt doesn't
even display.

What am I missing?

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Jean-Michel VEAUVY | 7 Dec 2006 09:44
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Re: vnc throught routeur

Hi Michel,

Le mercredi 6 décembre 2006 à 21:20:52, vous écriviez :

> I'm really newbie on VNC.
> I use under Linux, I have no particular matters to connect to other
> pc on the home network (apart maybe the fact that I can't re-access
> to an user because i modified some think through the same session
> that it waq already working to the target host, well...), but i
> din't really understand how to connect from the inernet throught the
> routeur gateway to my host. thinking I have to use it like that, but
> i'm not sure:
> vncviewer -compresslevel 5 -quality 5 -via 217.194.x.x (my routeur IP)
> 169.254.2.7:1 (my host and display address)
> If i'm right, it was really kind to anybody to tell or to correct my
> commande line.
> And "no", i can't for now trying test from outdoor because I can't
> move from home still for 2 weeks again.

http://faq.gotomyvnc.com is your friend, as is http://www.gotomyvnc.com. The
latter website will tell you what your external IP is and the former will
give you instructions on how to configure your router. If you need specific
instructions for your modem/router, I recommend http://www.portforward.com. 

HTH

--

-- 
Regards,
 Jean-Michel                            e-mail : veauvy <at> atool.fr
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