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% to scale the desktop to a percentage of the size the session window would be were this parameter set to None.

x to scale the desktop to the specified session window height the width is determined by the aspect ratio.

x to scale the desktop to the specified session window width the height is determined by the aspect ratio.

x to scale the desktop to the specified session window size.

FitHeight to scale the desktop to the height of the session window.

FitWidth to scale the desktop to the width of the session window.

AspectFit to scale the desktop to the size of the session window, but retain the aspect ratio.

Fit to scale the desktop to the size of the session window.

FitAuto to automatically choose between FitAuto, Fit, FitWidth or FitHeight.

FitAutoAspect to automatically choose between AspectFit, FitWidth or FitHeight.

The window cannot be resized larger than the desktop. If it is bigger than the session window, scroll bars appear.

None to not scale the VNC Server computer’s desktop.Specify one of the following values to determine whether the VNC Server computer’s desktop is scaled relative to the size of the active VNC Viewer session window: The second entry ( CConnection:file:100) overrides this for connection activity, recording it (to the same file) at level 100.The first entry ( *:file:10) specifies that all activity is recorded to file at level 10.If you use SysLog, translates as follows: 0 is Syslog 3 (Error), 1 to 5 is 4 (Warning), 6 to 10 is 5 (Notice), 11 to 30 is 6 (Informational), and more than 30 is 7 (Debug). determines severity: 0 includes only serious errors, 10 includes basic audit information, 30 includes general information, and 100 includes all possible information, potentially including keystrokes.

Under Mac and Linux, either syslog (configured using SyslogFacility under Linux), stderr or file.

Under Windows, either stderr, file (configured using LogDir and LogFile), or EventLog (to write to the Windows Event Log service).

To see a list of available activities, examine the Log names section in the advanced help output (run the command vncviewer -help all). determines the type of activity to record, for example connection, printing or file transfer activity, or * to record all. Specify an ordered, comma-separated list of activities to record, each of the form: See also: SecurityNotificationTimeout, WarnUnencrypted, RsaPrivateKeyFile This request is granted unless the VNC Server Encryption parameter is set to AlwaysMaximum or AlwaysOn.

PreferOff to prefer that the exchange of authentication credentials be encrypted using at least 128-bit AES, but that sessions themselves need not be encrypted.

This request is granted unless the VNC Server Encryption parameter is set to Alwaysoff.

PreferOn to prefer that direct connections be encrypted end-to-end using at least 128-bit AES.

AlwaysOn to request that direct connections be encrypted end-to-end using at least 128-bit AES.

AlwaysMaximum to request that direct connections be encrypted end-to-end using 256-bit AES.

By default, direct connections will be encrypted end-to-end unless the VNC Server Encryption parameter is set to PreferOff or AlwaysOff.

*Do not edit this parameter if VNC Server has a Home or Professional subscription, or an Enterprise subscription and you intend to establish cloud connections to the VNC Server computer. However, it may be useful in the context of some regulatory compliance regimes, to guarantee that session data will never be transmitted via third party servers.Īn equivalent VNC Server AllowCloudRelay parameter is available to prevent cloud connections to particular computers. Setting this parameter to FALSE will cause an unquantifiable percentage of cloud connections to fail. Note that session data relayed via our cloud service is encrypted end-to-end, so cannot be deciphered by RealVNC, nor anyone else. However, intermediate network hardware may mean this is not possible, so the cloud service automatically falls back to relaying session data this ensures cloud connections succeed. Where possible, the cloud service then negotiates peer-to-peer sessions between endpoints, so session data is transmitted directly between them this is likely to be more performant. Specify FALSE to prevent cloud connections from the VNC Viewer computer if they would be relayed via RealVNC’s cloud service.Īll cloud connections are brokered by RealVNC’s cloud service.

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