Currently you can only block Internet access completely using the Internet Access Control add-on. However it allows configuring exceptions (statically) such as local or intranet sites so these sites stay reachable while the Internet access is blocked. In a future release this year, we'll add a blacklisting features, so teachers can easily block the access to specific sites, e.g. video platforms.

@treizek maybe you need all gigabit interfaces and high end cpu, but for what vnc dont offer sound right ?

@marcel You would probably have the default ACL applied which should by default permit all IPv4 inbound and outbound traffic. Security groups are stateful so any outbound traffic sent from an instance is allowed a return response regardless of the inbound rules you have defined. Responses to allowed inbound traffic are also not blocked regardless of any outbound rules applied. If you created and applied the security group then you will need to add the necessary inbound rules. By default this security group includes an outbound rule that permits all outgoing traffic. The default security group allows all inbound traffic (and by default all outbound traffic) unless additional rules have been applied. If you are using the default security group I would suggest removing any added rules then attempting another demo connection to see if that works. I’m assuming the demo port is 11400.

@tobydox said in Veyon 4.5.1 I can't open website from Master: Some technical background: first you should make sure the tray icon is visible on all computers. If it's not visible, the Veyon Service for some reason is not able to run it's own worker processes within the user session. The Veyon tray icon is provided by such a worker process. Launching the "Run program" or "Open website" features also launches a (different) worker process inside the user sessions as a helper process. This worker will then start the program or open the website and this way make sure the program or browser is opened with user privileges (instead of Admin/LocalSystem privileges which the Veyon Service is running with). On computers where the tray icon is not visible, can you please check the VeyonServer.log file for messages starting with WindowsCoreFunctions and post them here? Veyonserver.log https://pastebin.com/Z4bGjPd0 VeyonService.log https://pastebin.com/BH1And2t

Exactly, it looks like KDE NEON is not fully binary compatible with Ubuntu 20.04. I suggest to build the Veyon package on your own as described here: https://github.com/veyon/veyon/blob/master/README.md#veyon-on-linux

We'll launch a new pricing model this year which will also include licenses for personal use. Please contact sales@veyon.io to discuss further possibilities

The username/password of the teacher (or any other user using Veyon Master). The provided account has to exist on the remote computers (which should be default when working in an AD environment).

Are you using the same logon credentials on the 2 affected teacher computers as on the other working teacher computers? Can you check that the time is synchronized on all computers properly? Besides this I recommend upgrading to the latest version (as of writing: 4.5.2) on both teacher and student computers.

@itguy Hi, the idea of a background task sounds good to me. I'll give this a try.

@kunneljose https://github.com/veyon/veyon/blob/master/INSTALL https://veyon.io/download/

@issam Yes, just confirming Windows was set to not display last signed-in user. I have no other ideas at the moment.

@ocrozat Hello sir, Do you found the solution for this probleme, I have the same probleme, And I don't know how to fix it. When I try to connect with user name to an other PC , he refuse informations entred and message appear : tentative d'ouverture de session en utilisant des informations d'identification explicites

@marcus There is a button to the right of the search field at the bottom of the master window. Its purpose is to toggle display of powered-off or otherwise unreachable computers chosen for monitoring.

It seems that the slowness and freezes disappear after adjusting the LDAP update interval to 999 instead of 60 seconds .

@itguy You could instead copy the wakemon.bat file to a shared network folder then use 'Run program' to run the batch file from the shared folder: \\servername\sharename\veyon\wakemon.bat

SOLUTION: I created new set of keys and those worked. Old keys were from 09/2020, weird that those didn't work.