As James says this is a networking issue (either NAT at the switch/router between subnets and/or software firewall(s) at the respective PCs). You need to go through a process of elimination using ping, telnet, VNC (in that order) and configuring your switches, hardware and software firewalls in turn, while you're keeping an eye on their log files.
HTH. On Tuesday 23 January 2007 09:22, James Weatherall wrote: > Javier, > > VNC won't alter your network settings in any way, so the fact that your > ability to ping machines changed when you installed it is coincidence. > > Ping isn't a definitive test - many firewalls will allow pings to be > ignored, so you should check to verify that that's not what's happened to > your problem systems. > > Regards, > > Wez @ RealVNC Ltd. > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Javier Sheh > > Sent: 22 January 2007 20:08 > > To: [EMAIL PROTECTED]; vnc-list@realvnc.com > > Subject: Re: Cannot access IP address from another subnet > > > > All PCs are running Windows 2000. I found out that PC B that > > has the Server > > was running 3.3.3 R9 while the Client in PC A was running > > 4.1.1. Could this > > cause such a problem? I re-installed the software on both PC > > A and B to > > 4.1.2 but still have the same problem with the IP addresses. > > > > >From: Seak <[EMAIL PROTECTED]> > > >To: vnc-list@realvnc.com > > >Subject: Re: Cannot access IP address from another subnet > > >Date: Mon, 22 Jan 2007 19:00:31 +0100 > > > > > > 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 > > > > > >_______________________________________________ > > >VNC-List mailing list > > >VNC-List@realvnc.com > > >To remove yourself from the list visit: > > >http://www.realvnc.com/mailman/listinfo/vnc-list > > > > _________________________________________________________________ > > The MSN Entertainment Guide to Golden Globes is here. Get > > all the scoop. > > http://tv.msn.com/tv/globes2007/?icid=nctagline2 > > _______________________________________________ > > VNC-List mailing list > > VNC-List@realvnc.com > > To remove yourself from the list visit: > > http://www.realvnc.com/mailman/listinfo/vnc-list > > _______________________________________________ > VNC-List mailing list > VNC-List@realvnc.com > To remove yourself from the list visit: > http://www.realvnc.com/mailman/listinfo/vnc-list -- Regards, Mick [demime 1.01d removed an attachment of type application/pgp-signature] _______________________________________________ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
