I understand that this is security related.
But due to our settings (we run a kind of kiosk mode without a logged in user) we urgently need the file transfer while no user is logged in.
Would it be possible to set the username to use for file transfer in the .ini file?
Update: UltraVNC 1.4.3.6 and UltraVNC SC 1.4.3.6: viewtopic.php?t=37885
Important: Please update to latest version before to create a reply, a topic or an issue: 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
Important: Please update to latest version before to create a reply, a topic or an issue: 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
UltraVNC 1.4.2.0 and UltraVNC SC 1.4.2.0 - Feedbacks
Re: UltraVNC 1.4.2.0 and UltraVNC SC 2.0 (1.4.2.0) - Feedbacks
Maybe to be more precise:
User xyz is logged in, but we change "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell" from explorer.exe to our own .exe ...
So for some software the system looks like if there´s no user logged in ...
Up to 1.3.8.2 FT worked with FTUserImpersonation=1, but with 1.4.2.0 it seems to not work any longer ...
And like I asked in the post before, maybe it´s possible to add a user to the .ini so it will use this credentials for FT?
User xyz is logged in, but we change "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell" from explorer.exe to our own .exe ...
So for some software the system looks like if there´s no user logged in ...
Up to 1.3.8.2 FT worked with FTUserImpersonation=1, but with 1.4.2.0 it seems to not work any longer ...
And like I asked in the post before, maybe it´s possible to add a user to the .ini so it will use this credentials for FT?
- Rudi De Vos
- Admin & Developer
- Posts: 6853
- Joined: 2004-04-23 10:21
- Contact:
Re: UltraVNC 1.4.2.0 and UltraVNC SC 2.0 (1.4.2.0) - Feedbacks
In that case there is a possible soloution, try
[admin]
alternate_shell = own.exe
When this parameter is set and explorer.exe is not found we use own.exe instead.
Please give it a try
[admin]
alternate_shell = own.exe
When this parameter is set and explorer.exe is not found we use own.exe instead.
Please give it a try
Re: UltraVNC 1.4.2.0 and UltraVNC SC 2.0 (1.4.2.0) - Feedbacks
I´ll test it, but I think it won´t work...
I´ll try to describe how we are working:
- in "Shell" (where normally "explorer.exe" is set) we set to "PassChecker.exe"
- When System starts, "PassChecker.exe" is started
- Then you have ~ 1 Minute to enter the technician password
- If password is not entered or wrong a "StartApplication.bat" is started which starts all needed processes - after that "PassChecker.exe" closes itself
- If password is correct a "StartAdministration.bat" is started and "explorer.exe" is started - "PassChecker.exe" remains in memory
- As soon as the technician clicks on "Logoff" (provided by "PassChecker.exe"), "explorer.exe" and "PassChecker.exe" are closed
So most of the times, the "Shell" is not running ...
I´ll try to describe how we are working:
- in "Shell" (where normally "explorer.exe" is set) we set to "PassChecker.exe"
- When System starts, "PassChecker.exe" is started
- Then you have ~ 1 Minute to enter the technician password
- If password is not entered or wrong a "StartApplication.bat" is started which starts all needed processes - after that "PassChecker.exe" closes itself
- If password is correct a "StartAdministration.bat" is started and "explorer.exe" is started - "PassChecker.exe" remains in memory
- As soon as the technician clicks on "Logoff" (provided by "PassChecker.exe"), "explorer.exe" and "PassChecker.exe" are closed
So most of the times, the "Shell" is not running ...
- Rudi De Vos
- Admin & Developer
- Posts: 6853
- Joined: 2004-04-23 10:21
- Contact:
Re: UltraVNC 1.4.2.0 and UltraVNC SC 2.0 (1.4.2.0) - Feedbacks
It don't have to be a real shell, but some exe that is started by the user you want to impersonate.startApplication.bat" is started which starts all needed processes
You can use any needed process for it.
VNC copy the security token from the exe it doesn't have to be a shell
You can also runas /user:my notepad.exe and use notepad.exe for it
Re: UltraVNC 1.4.2.0 and UltraVNC SC 2.0 (1.4.2.0) - Feedbacks
Perfect. Thank you for the detailed explanation.
Will start/continue with the tests tomorrow.
Will start/continue with the tests tomorrow.
Re: UltraVNC 1.4.2.0 and UltraVNC SC 2.0 (1.4.2.0) - Feedbacks
Hi there!
my first message here, even if it's some years I use UltraVNC without problems!
It's some days I'm trying to stop a nasty IP (125.70.16.120) to try to connect to may machine.
I had version 1.2.30, yes quite old, and was experimenting with QuerySetting=2 and AuthHosts parameters:
Then yesterday evening I decided to upgrade to last version, 1.4.2.0
But I think there's a bug, because each and every time I open and close the settings window,
QuerySetting value is resetting to 4, it really seems hardcoded!
Also, in the settings windows this parameter is not present, as well as the Host lists parameter.
Plus, this window seems that doesn't read the actual running config, so the checkbox is always unmarked
The problem is that 4 set this behaviour (as from https://uvnc.com/docs/uvnc-server/69-ultravncini.html):
Define on how to react on the (-,?,+) from the Authhosts.
0="+:Accept, ?:Accept, -:Query"
1="+:Accept, ?:Accept, -:Reject"
2="+:Accept, ?:Query, -:Reject [Default]"
3="+:Query, ?:Query, -:Reject"
4="+:Query, ?:Reject, -:Reject"
This means that I now have to confirm every allowed connection.
Instead I wanted to allow my own connections with the +,
and query that specific IP and also every other IP with the ?
I now have a workaround:
- manually stop the windows service uvnc_service
- update ultravnc.ini
- manually start the windows service uvnc_service
I also have to remember not to save the configuration using the Admin Properties window.
Is it possible to fix these issue, or maybe there's some other workaround?
Let me know if you need some more info!
Best regards,
Andrea - Italy
my first message here, even if it's some years I use UltraVNC without problems!
It's some days I'm trying to stop a nasty IP (125.70.16.120) to try to connect to may machine.
I had version 1.2.30, yes quite old, and was experimenting with QuerySetting=2 and AuthHosts parameters:
Code: Select all
AuthHosts=?:?125.70.16.120:+37:+192.168.1
QuerySetting=2
QueryTimeout=10
QueryAccept=0
QueryIfNoLogon=0
But I think there's a bug, because each and every time I open and close the settings window,
QuerySetting value is resetting to 4, it really seems hardcoded!
Also, in the settings windows this parameter is not present, as well as the Host lists parameter.
Plus, this window seems that doesn't read the actual running config, so the checkbox is always unmarked
The problem is that 4 set this behaviour (as from https://uvnc.com/docs/uvnc-server/69-ultravncini.html):
Define on how to react on the (-,?,+) from the Authhosts.
0="+:Accept, ?:Accept, -:Query"
1="+:Accept, ?:Accept, -:Reject"
2="+:Accept, ?:Query, -:Reject [Default]"
3="+:Query, ?:Query, -:Reject"
4="+:Query, ?:Reject, -:Reject"
This means that I now have to confirm every allowed connection.
Instead I wanted to allow my own connections with the +,
and query that specific IP and also every other IP with the ?
I now have a workaround:
- manually stop the windows service uvnc_service
- update ultravnc.ini
- manually start the windows service uvnc_service
I also have to remember not to save the configuration using the Admin Properties window.
Is it possible to fix these issue, or maybe there's some other workaround?
Let me know if you need some more info!
Best regards,
Andrea - Italy
Re: UltraVNC 1.4.2.0 and UltraVNC SC 2.0 (1.4.2.0) - Feedbacks
Hi there,
I have a slight issue with version 1.4.2.0 of the Viewer - when I exit the application, the "Windows Security" settings screen and a "File Explorer" window are opened.
I am using Windows 10 Pro (version 22H2: build 19045.3086)
I ran the "UltraVNC_1_4_20_X64_Setup.exe" to install the product. I am also using the SecureVNCPlugin64.dsm (version 2.4.1.0).
The issue doesn't appear to impact the functionality of the tool but it is a bit annoying![Very Happy :D](./images/smilies/_icon_biggrin.gif)
I have a slight issue with version 1.4.2.0 of the Viewer - when I exit the application, the "Windows Security" settings screen and a "File Explorer" window are opened.
I am using Windows 10 Pro (version 22H2: build 19045.3086)
I ran the "UltraVNC_1_4_20_X64_Setup.exe" to install the product. I am also using the SecureVNCPlugin64.dsm (version 2.4.1.0).
The issue doesn't appear to impact the functionality of the tool but it is a bit annoying
![Very Happy :D](./images/smilies/_icon_biggrin.gif)
Re: UltraVNC 1.4.2.0 and UltraVNC SC 1.4.2.0 - Feedbacks
Please use the latest UltraVNC or UltraVNC SC releases:
- viewforum.php?f=56
- viewforum.php?f=56