vncviewer -via <gateway> not available in Windows-Version

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vncviewer -via <gateway> not available in Windows-Version

Boris-27
Hej all,


I'm afraid this thing was already dicussed, but I didn't find a good answer.

But first thanks to all who are working on this nice peace of software!

I have some networks behind linux firewalls that are to be remote
controlled. Those firewalls are capable of ssh and from my Debian-Linux
PC I use the command

vncviewer -via <user@firewall> <remote-PC's-IP>
.
This does not work from Windows clients. All docs I found make
neccessary quite a lot configurations of putty (for instance) to build
the ssh-tunnel in advance. What about the '-via' in Windows? Is there a
vnc-Version for Windows supporting the '-via'-Statement?

Thanks,

Boris


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Re: vncviewer -via <gateway> not available in Windows-Version

Claudio Coletta-2
> Hej all,
>
> [...] Is there a vnc-Version for Windows supporting the '-via'-Statement?
>
            No, unfortunately there isn't (Neither RealVNC, UltraVNC, ChickenVNC or TightVNC). At the moment the only solution is the use of Putty (or something similar).


> Thanks,
>
> Boris
>
Bye,
Claudio.

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Re: vncviewer -via <gateway> not available in Windows-Version

Michael D. Setzer II
Not sure this is what you are looking at doing, but this is what I have done.
I have a Fedora Server that is the firewall in front of my classroom D-7. That
lab is behind the firewall with the private IP of 192.168.7.201 thru 220. The
servers public IP is changed here to AAA.AAA.AAA.29 and the iptables lines
wrap. With this setup, I can use vncviewer to connect to the servers ip
address with the port address to access the machines behind it.
vncviewer AAA.AAA.AAA.29:1 would connect to machine 192.168.7.201 with
the port I use 5979. This works if the machines are in Fedora or XP, since
both load the vncserver. So, the vncviewer is connecting to the firewall
machine, and it maps the vnc to the machines behind it.

You could also use stunnelling on the server as well to map ports.

Note: Each iptable line is a single line.


iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5901 -j
DNAT --to-destination 192.168.7.201:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5902 -j
DNAT --to-destination 192.168.7.202:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5903 -j
DNAT --to-destination 192.168.7.203:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5904 -j
DNAT --to-destination 192.168.7.204:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5905 -j
DNAT --to-destination 192.168.7.205:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5906 -j
DNAT --to-destination 192.168.7.206:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5907 -j
DNAT --to-destination 192.168.7.207:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5908 -j
DNAT --to-destination 192.168.7.208:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5909 -j
DNAT --to-destination 192.168.7.209:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5910 -j
DNAT --to-destination 192.168.7.210:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5911 -j
DNAT --to-destination 192.168.7.211:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5912 -j
DNAT --to-destination 192.168.7.212:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5913 -j
DNAT --to-destination 192.168.7.213:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5914 -j
DNAT --to-destination 192.168.7.214:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5915 -j
DNAT --to-destination 192.168.7.215:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5916 -j
DNAT --to-destination 192.168.7.216:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5917 -j
DNAT --to-destination 192.168.7.217:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5918 -j
DNAT --to-destination 192.168.7.218:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5919 -j
DNAT --to-destination 192.168.7.219:5979
iptables -t nat -A PREROUTING -p tcp -d AAA.AAA.AAA.29 --dport 5920 -j
DNAT --to-destination 192.168.7.220:5979


On 4 Mar 2009 at 15:38, Claudio Coletta wrote:

>
> > Hej all,
> >
> > [...] Is there a vnc-Version for Windows supporting the '-via'-Statement?
> >
> No, unfortunately there isn't (Neither RealVNC, UltraVNC, ChickenVNC or TightVNC). At
> the moment the only solution is the use of Putty (or something similar).
>
>
> > Thanks,
> >
> > Boris
> >
> Bye,
> Claudio.


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Re: vncviewer -via <gateway> not available in Windows-Version

Constantin Kaplinsky
In reply to this post by Boris-27
Hello Boris,

>>>>> Boris wrote:

> vncviewer -via <user@firewall> <remote-PC's-IP> . This does not work
> from Windows clients. All docs I found make neccessary quite a lot
> configurations of putty (for instance) to build the ssh-tunnel in
> advance. What about the '-via' in Windows? Is there a vnc-Version for
> Windows supporting the '-via'-Statement?

I already started the work on the -via option in the Windows viewer, but
have not finished its support due to the lack of time. Now we have more
full-time developers in the TightVNC Group, it's very likely that we'll
finish that feature.

--
With Best Wishes,
Constantin


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Re: vncviewer -via <gateway> not available in Windows-Version

Boris-27
Constantin Kaplinsky schrieb:

> Hello Boris,
>
>>>>>> Boris wrote:
>
>> vncviewer -via <user@firewall> <remote-PC's-IP> . This does not work
>> from Windows clients. All docs I found make neccessary quite a lot
>> configurations of putty (for instance) to build the ssh-tunnel in
>> advance. What about the '-via' in Windows? Is there a vnc-Version for
>> Windows supporting the '-via'-Statement?
>
> I already started the work on the -via option in the Windows viewer, but
> have not finished its support due to the lack of time. Now we have more
> full-time developers in the TightVNC Group, it's very likely that we'll
> finish that feature.
>

Hej Claudio, Michael and Constantin,

thank you for your replies on my question. Actually port-forwarding is
not an acceptable solution for our environment. Too many ports needed to
be opened on the firewall.
I will promote a simple linux-installation in a virtual box or booting a
life-linux (Knoppix or so) to those who want to have remote access.
Constantin, I know this one is a sensible question but I want to ask it,
because I know I'm going to be asked: What do you think about the time
frame when this feature will be available?

Thank you very! much,


Boris

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Re: vncviewer -via <gateway> not available in Windows-Version

Boris-27
Constantin Kaplinsky schrieb:

> Hello Boris,
>
>>>>>> Boris wrote:
>
>> Constantin, I know this one is a sensible question but I want to ask
>> it, because I know I'm going to be asked: What do you think about the
>> time frame when this feature will be available?
>
> I cannot answer this question right now. We have a lot of high-priority
> things to do and SSH tunneling is not the highest priority at the moment.
>
> Would you be interested in (co-)funding this project? If we could gather
> enough funding, we would be able to make this feature available in the
> nearest time (e.g. within a month).
>

Hej Constantin,

thank you for your answer. I apologize for the delay.

With my Linux-usage I'm glad to have the via-option available. I
discovered the vnc-usage from windows for some collegues working on that
platform. I will spread your word to those who might have interest in
funding!

Regards,

Boris


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