After more 1 000 000 (one million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
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Problem with security on UltraVNC SC

Should you have problems with the DSM plugin? Here is the place to look for help or report issues
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Fantom
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Joined: 2023-10-09 12:04

Problem with security on UltraVNC SC

Post by Fantom »

How can I add plugin for UltraVNC SC Viewer 1.4.3.5?

I start it from cmd:

Code: Select all

vncviewer -listen -dsmplugin msrc4plugin_for_sc.dsm
and when client try connect to me (using -secureplugin -connect), i get error:
The Plugin cannot be loaded. Please check its integrity.

Fantom
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Rudi De Vos
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Re: Problem with security on UltraVNC SC

Post by Rudi De Vos »

UltraVNC SC use the latest plugin, it's buildin.

If you use the 64-bit version of the UltraVNC Viewer:

Code: Select all

vncviewer -listen -dsmplugin SecureVNCPlugin.dsm or SecureVNCPlugin64.dsm
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Fantom
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Joined: 2023-10-09 12:04

Re: Problem with security on SC

Post by Fantom »

vncviewer -listen -dsmplugin SecureVNCPlugin.dsm

Now i have error: Server closed connection. Your connection has been rejected.

Do I need to configure it somehow?
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Rudi De Vos
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Re: Problem with security on UltraVNC SC

Post by Rudi De Vos »

UltraVNC links (join us on social networks):
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- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
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Fantom
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Re: Problem with security on UltraVNC SC

Post by Fantom »

But I try use this new one (experimental) from:
- https://forum.uvnc.com/viewtopic.php?t=37866
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Rudi De Vos
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Re: Problem with security on UltraVNC SC

Post by Rudi De Vos »

Code is the same, the UltraVNC SC Online Creator uses the same EXE as you can download using the ZIP.

UltraVNC SC requires a key for authentication
One part need to be distributed with the UltraVNC Server, the contra key is used by the UltraVNC Viewer
The keys are a pair

It's explained in SC subsection:
- https://uvnc.com/downloads/ultravnc/158 ... 4-3-5.html
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Rudi De Vos
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Re: Problem with security on UltraVNC SC

Post by Rudi De Vos »

Seems latest plugin doesn't like the be embedded.
For now added back the previous plugin.
UltraVNC SC Online Creator also updated.

New version:
- https://uvnc.eu/download/1430/UltraVNC_SC_1436.zip
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Fantom
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Joined: 2023-10-09 12:04

Re: Problem with security on UltraVNC SC

Post by Fantom »

Ok.

I generated keys, and download UltraVNC SC.
In catalog I have:
- vncviewer.exe
- MSRC4Plugin_for_sc.dsm
- SC_Viewer_ClientAuth.pkey

I run UltraVNC from batch file:

Code: Select all

vncviewer -listen -dsmplugin MSRC4Plugin_for_sc.dsm
I run downloaded helpdesk.exe

I try connect to computer and I see error: "The plugin cannot be loaded. Please check its name integrity"

PS: I also run manualy UltraVNC Server, checked "Encryption use", select "MSRC4Plugin_for_sc", click "config" and I see this same error.
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Rudi De Vos
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Re: Problem with security on UltraVNC SC

Post by Rudi De Vos »

MSRC4Plugin_for_sc.dsm is the old plugin used by the old UltraVNC SC versions.

All new versions use the SecureVNCPlugin.dsm, the UltraVNC Viewer also need to use SecureVNCPlugin.dsm (x86) or SecureVNCPlugin64.dsm (x64)
UltraVNC links (join us on social networks):
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Fantom
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Joined: 2023-10-09 12:04

Problem with security on UltraVNC SC

Post by Fantom »

Ok - now its works.

I misunderstood what x means "latest" and "previous" plugin :)
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