Update: UltraVNC 1.4.3.6 and UltraVNC SC 1.4.3.6: https://forum.uvnc.com/viewtopic.php?t=37885
Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864

Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc

Encryption doesn't work, but no error messages

Single Click discussions / bugs
Post Reply
gmoore
Posts: 3
Joined: 2006-11-17 22:22

Encryption doesn't work, but no error messages

Post by gmoore »

After reading through the posts I believe I setup encryption correctly to work with sc and the viewer. However, when I start the encryption from the command line and connect from the client I never get the message box prompting me to take control. The client says the connection is now active, but the server does nothing. It just sits there waiting for something to happen. I am running windows 2003 R2 and wondered if that had something to do with it.
redge
1000
1000
Posts: 6797
Joined: 2004-07-03 17:05
Location: Switzerland - Geneva

Re: Encryption doesn't work, but no error messages

Post by redge »

dsmplugin build same at both side ?

1.1.8 to/from 1.1.8 OK
1.2.2 to/from 1.2.2 OK

1.1.8 to/from 1.2.0 NOK
1.1.8 to/from 1.2.1 NOK
UltraVNC 1.0.9.6.1 (built 20110518)
OS Win: xp home + vista business + 7 home
only experienced user, not developer
gmoore
Posts: 3
Joined: 2006-11-17 22:22

Re: Encryption doesn't work, but no error messages

Post by gmoore »

If I disconnect the machine that initiates the connection the vnc listener then generates the following error


Connection failed - Error reading protocol version

Possible causes

You've forgotten to select a dsmplugin and the server uses a dsm plugin
the selected dsmplugin is not compatible with the one running on the server
the selected dsmplugin is not correctly configured (also possibly on the server)

the password you've possibly entered is incorrect.

I used the latest mscr4plugin_noreg.dsm 122

I included the dsm file and the new rc4 in the listening viewer and the exe that was created.
redge
1000
1000
Posts: 6797
Joined: 2004-07-03 17:05
Location: Switzerland - Geneva

Re: Encryption doesn't work, but no error messages

Post by redge »

what the command line of your vncviewer and the [HOST] of your sc ?
UltraVNC 1.0.9.6.1 (built 20110518)
OS Win: xp home + vista business + 7 home
only experienced user, not developer
gmoore
Posts: 3
Joined: 2006-11-17 22:22

Re: Encryption doesn't work, but no error messages

Post by gmoore »

I ran it from a batch file.

cd \
cd prog*
cd ultra*
vncviewer.exe -listen 5500 -dsmplugin MSRC4Plugin_NoReg.dsm

Both the host of SC and the viewer are running Windows 2003 R2
redge
1000
1000
Posts: 6797
Joined: 2004-07-03 17:05
Location: Switzerland - Geneva

Re: Encryption doesn't work, but no error messages

Post by redge »

use arc4plugin instead msrc4plugin
or
new replacement pchelpware without plugin because is encrypted from factory.

[topic=8350][/topic]

pchelpware_viewer + create your own pchelpware_server
http://www.pchelpware.com/

for test it without risk, before make your own
[topic=8395][/topic]
Last edited by redge on 2006-11-20 19:50, edited 1 time in total.
UltraVNC 1.0.9.6.1 (built 20110518)
OS Win: xp home + vista business + 7 home
only experienced user, not developer
Post Reply