This is very very odd. What O/S is in your PC B? Beside PC C can't
ping PC B, can PC C open a VNC connection to PC B (normally the answer
should be No)?
Have you triggered some firewall by mistake in PC B?
Javier Sheh wrote:
> Hello,
>
> I have 3 PC's in 3 different subnets in my intranet. PC A has IP
> address 135.21.42.108, PC B has IP address 135.16.102.30, PC C has IP
> address 135.91.108.36. I loaded RealVNC Free Edition 4.1.1 server on
> B. I loaded RealVNC Free Edition 4.1.1 client on A. No RealVNC was
> on C. Before loading RealVNC, I was able to ping from A to B and from
> C to B. I established RealVNC connection from A to B. After this, I
> tried pinging from C to B, but could not get response from B. C could
> ping anything on B's subnet (e.g. 135.16.102.50, 135.16.102.1) except
> B itself. I rebooted PC A and PC B, but still could not get to PC B
> through C. I tried another PC on subnet same as C and could not ping
> PC B either. Is RealVNC establishing some kind of pipe that prevents
> other subnets from accessing a specific server address? What can be
> done to clear this problem? Is there some kind of option I am
> overlooking? Am I closing the connection improperly?
>
> I have noticed this with two other IP addresses that I used RealVNC
> with. These IP addresses cannot be pinged from a foreign subnet.
>
> Thanks,
> Javier
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