Re: VNC through VPN

[Junk]

Simon Hobson wrote:
Junk wrote:
I have 2 Netgear FVS328 VPN routers connected over 2 DSL lines. Their 
is a VPN up and running.  I can ping/telnet etc from one network to 
the other.

The problem is.  When I attempt to use VNC or PCAnywhere for that 
matter, it connects, then stalls.  It ask for the username and 
password then opens the application window and then fails to render 
anything. (black screen)  It just sits there then after a couple of 
minutes it just disconnects.

I ran Etheral and I didn't see anything wrong that I could tell. Each 
PC was talking back and forth in what seem to be a normal TCP 
connection.

If anyone has any ideas would could be causing this it would be 
greatly appreciated.

Assuming that traffic is able to pass freely on the required ports 
(580x or 590x) then the other issue may be your colour depth. I use 
VNC to access the office systems from home, and it can take quite a 
while to download the windows wallpaper if you haven't turned it off 
and/or reduced the bit depth that VNC is transferring. I don't know if 
there is anything in the protocol that might time out if a screen 
update takes too long.

I can telnet to these ports. (I get the RGB xxx.yyy when I telnet to 
port 5900)  If I try to make this connection on a local lan. (brought 
the PC to this location)  There are no problems connecting at all.  I 
just don't understand.  I can telnet to all the ports without problem.  
I read that ICS could be a problem on Windows2000 and XP, but it was 
already disabled.

What I've found (using Chicken of the VNC on OS X) is that the initial 
screen draw is not drawn on screen until the entire screen is 
downloaded - so you get a long pause and black screen. If I switch 
between normal and full-screen modes, it draws what it has downloaded 
so far and so it is easy to see that the delay is due to downloading 
the initial window (ie wallpaper).

I would suggest turning off the wallpaper and connecting at a lower 
bit depth and see if that helps things.
Hmm.. The system doesn't have any wallpaper. (just a black background)  
Generally, the POS software is open and cannot be minimized by the user 
without an administrative password.

Simon
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