DSM Plugin between 32bit and 64bit

[uglymr]

Hello all,

I'm new to this forum and hope to get some help here. Thanx in advance
I have one WIN XP 32bit and one WIN 7 Home 64bit pc. For security reasons I want to use DSM plugin to make connection from WIN7 to WIN XP over the Internet.
Without DSM plugin I can connect with no problem. When I want to use DSM plugin it seems to me that the 32bit version is not compatible with the 64bit version, is that right?
Can anyone please give me a hint on how to connect the two mentioned PCs with using DSM plugin, please?
A second question would be if it is necessary to use DSM plugin for security reasons if I would use a VPN connection instead?

Thank you very much

[Rudi De Vos]

You need to use the 32bit plugin with 32bit vnc and the 64bit plugin with 64bit vnc.
You can connect a 32bit server with a 64bit viewer or a 64bit server with a 32viewer.

It works, just make sure you use the plugin of the same bit as the exe.

[uglymr]

Thank you very much for your quick answer.

But I don't exactly know what you mean with "just make sure you use the plugin of the same bit as the exe."
Can you please explain further to an a bit dummy user that I am

Thank you very much

[Rudi De Vos]

There is a 32bit(SecureVNCPlugin.dsm) plugin and a 64bit (SecureVNCPlugin64.dsm) plugin.

Using a 32bit dsmplugin with a 64bit winvnc.exe/vncviewer.exe -> fail
Using a 64bit dsmplugin with a 32bit winvnc.exe/vncviewer.exe ->fail
Using a 32bit dsmplugin with a 32bit winvnc.ex/vncviewer.exee ->OK
Using a 64bit dsmplugin with a 64bit winvnc.exe/vncviewer.exe ->OK

You can connect from
winvnc.exe(64) +SecureVNCPlugin64.dsm <-> vncviewer.exe(64)+SecureVNCPlugin64.dsm OK
winvnc.exe(32) +SecureVNCPlugin.dsm <-> vncviewer.exe(32)+SecureVNCPlugin.dsm OK
winvnc.exe(64) +SecureVNCPlugin64.dsm <-> vncviewer.exe(32)+SecureVNCPlugin.dsm OK
winvnc.exe(32) +SecureVNCPlugin.dsm <-> vncviewer.exe(64)+SecureVNCPlugin64.dsm OK

[uglymr]

Thank you very much. Now I got it

[fosters]

I can connect to a remote 32-bit test/dev (Win2003) server from 64-bit Thinkpad (Windows 7 KVM) at first using UltraVNC but then the next day cannot connect again. It hangs on Negotiating Protocol Version or get and error about a DSMPlugin missing. The workaround is to use RDC and do a physical reboot of the 32-bit test/dev server, then I can connect with UltraVNC again from the Thinkpad. So something expires on the 32-bit server for UltraVNC after about 24 hours. Where do I get the right DSMPlugin for the 32-bit server?

[Rudi De Vos]

There are no expires in ultravnc.
You are using the correct plugins, else it would not work at all.
Looks like the server ( running as service) get blocked...possible caused by some port scanners or other software scanning
the default vnc ports.

*try to activate the winvnc.log logging, possible there is some clue in the debug
*update the the pre-release 1.2.0.8 possible it's something that's fixed
*using another port then the default one