UltraVNC

From time to time I get the following event in the event viewer on the machine running the distributer5.exe service:


Any ideas?

As I mentioned in the first post, the same self-extract-exe works on many machines without any problem (and over ssl:443 connection).

It has problems only on certain win98 machines - so I can assure everybody that this SC package is fine.

The problem I have must origin from somekind of a bug in ...

But how can I tell which version is it?
The SC self extract archive contains a file named "WinVnc.exe"

Don't you think it has anything to do with the first error message?

http://www.od.co.il/images/temp/winvnc_error_win98_1.jpg

I've checked the client computer and did not find any vnc instance ...

Hello,

I'm getting the following errors on certain Win98 machines when using VNC SC (Both version 3 and not).

The error dialogs appear after selecting any ID from the list. The second error dialog appears on top of the first one.

http://www.od.co.il/images/temp/winvnc_error_win98_1.jpg

http ...

What I had to do was create a scheduled event that would stop and restart the repeater service every couple of hours.
That's what I'm trying to avoid! Stopping and Restarting the repeater ends all the sessions.

Isn't there any other way? Can anyone of the programmers see the above log and make ...

Hello.
I have a strange problem with the SC and the Repeater sevice (both the newest versions): Suddenly, after a few hours of many successful connections, the repeater stops receving registrations from the SCs.
I've built a debug SC with the following helpdesk.txt file:

[DEBUG]
[HOST]
Nir ...

UltraVNC is based on the TCP/IP protocol, that's the reason
you need to run the 2 helpers.
The Nat helpers encapsulate the tcp in udp streams.

vnc (tcp) <-->(tcp)nat helper(udp)<---> nat router

Udp packets don't need a 3the machine to travers a NAT router


UDP, like TCP is based on the IP ...

One answer to this would be "release the Nat2Nat server" or make it part of the repeater product. I like many admins have access to at least ONE pc that is using a real IP address, and this could be an argument to the SC w/nat2nat as to which server to use.


Why don't you start the Repeater (mode ...

The diference between repeater and NAT2NAT is that the repeater is ALWAYS in the middle of the viewer-server communication, instead NAT2NAT is used ONLY to establish the initial communication, and after that everything works like a Point to Point link between both ends.


You are wrong.
UltraVNC ...

For those of you that don't know, we were able to do a nat to nat connection using the repeater BUT using the repeater seriously henders performace as ALL traffic has to be relayed.

With nat2nat a publicly addressable server provides a mediated connection (acts as the traffic cop, to setup a ...

For anyone who wants to understand more about NAT, and why it makes problems with some VNC configurations.

Intruduction
NAT (Network Address Table) is used to support connection of several machines through a single outbound internet connection (or any network connection).
The idea behind NAT is ...

MY QUESTION:
Can you tell me what cases/environments SC will not connect?


Well, you must understand that UltraVNC uses TCP/IP protocol to communicate from the the Host to the Client machines.
Basically there are two ways to connect:
Point-to-Point or using a Repeater Server .

The Point-To ...

I'm using the repeater service for some time now, and it succeeds in 85%-90% of the cases.

In order for it to operate you need to run it on some machine that has a static IP (or you might be able to use some Dynamic DNS services - but I havn't tried that) with the incoming ports (you can select any ...