Indeed, it does not appear. You'll have to right click on the key and add a new entry. Name it LoopbackOnly, and give it a value (DWORD) of 1.

That should do it.

On Monday, January 26, 2004, at 04:03 AM, [EMAIL PROTECTED] wrote:

Dear Christopher,

I back at work now and I just ran regedit,
In my HKEY_LOCAL_MACHINE\software\ORL\WinVNC3\
there are a few entries, but no ALLOWLOOPBACK.
It's a Win2000 Advanced Server machine, and I believe
I have administrator rights?

thanks
Marijn

On Sat, 24 Jan 2004, Christopher Hickman wrote:

If you are using WinVNC, then you need to set the LoopbackOnly option.
I have run into this before.  Here's a excerpt from the documentation
<http://realvnc.com/winvnc.html> that explains it:

LoopbackOnly
By default, WinVNC servers accept incoming connections on any network
adapter address, since this is the easiest way of coping with
multihomed machines. In some cases, it is preferable to listen only for
connections originating from the local machine and aimed at the
"localhost" adapter - a particular example is the use of VNC over SSH
to provide secure VNC. Setting this registry entry to 1 will cause
WinVNC to only accept local connections - this overrides the
AllowLoopback and AuthHosts settings. Setting this entry to zero
causes WinVNC to accept connections on any adapter and is the default
setting. Local machine-specific setting.


Local machine-specific settings. Options specified here are not
overridable.
Location:
HKEY_LOCAL_MACHINE\Software\ORL\WinVNC3\

Good luck,
Topher

On Saturday, January 24, 2004, at 07:19 AM, [EMAIL PROTECTED] wrote:

Hi All,

I just started to play with vnc, but I do have
experience with remote port forwarding with ssh.
This is the problem I encountered:

At work, behind my employers firewall, I run the vnc server
(on windows 2000) on the standard 5900 port. I then use
a ssh client to connect to my linux machine at home, therebye
forwarding the remote port 5900 to the local port 5900 :
"ssh -l root -R:5900:localhost:5900 my.machine.at.home",

When at home, I run the vncviewer (for Linux), I expected to get
my desktop at work when doing "vncviewer localhost", but the vncviewer
stops and says, "local loopback connections are disabled".


I guess my port forwarding is not the problem: when I try to telnet
to localhost 5900, I get a response:

telnet localhost 5900
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
RFB 003.003

The vncviewer seems to prevent users from connecting
to a server that runs on the same machine (because
it doesn't make sense to do that), but in my case
it does make sense, because I forwarded the port to
(the same portnumber on) the machine at work.

What am I doing wrong?
I would very much appreciate suggestions or help.

Thanks
Marijn
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