FAQ De UltraVNC

VNC es un famoso, una cruz-plataforma y un software libre (GLP) permitiendo para controlar remotamente su computer(s) sobre cualquier conexión de TCP/IP como si usted estuviera delante de ella. Es muy útil para la administración de la red, localización de averías alejada, eLearning etcétera.

UltraVNC es una distribución realzada de VNC, para las plataformas Win32 solamente (para ahora), que trae toneladas de funcionalidades, y las características ese weremissing en otros sabores de VNC: Transferencia de archivo (desde principios de 2002), Conductor video , Velocidad , Charla del texto y seguridad realzada ( MS Conexión , DSM Plugins . ).

¿Es UltraVNC compatible con otras distribuciones de VNC?

Sí, UltraVNC es compatible con otros VNC importante condimenta... Pero la única manera de aprovecharse de algunas de sus características especiales (transferencia de archivo, MS conexión, DSM plugin, escondrijo, sola ventana, escalamiento del servidor, charla) es utilizar el espectador y el servidor de UltraVNC.

¿Sobre velocidad, téngale algunas pruebas patrones disponibles?

No. Apesadumbrado. Quizá más adelante. Para ahora, sugerimos que usted lo pruebe sobre un LAN o una conexión del módem. Usted debe encontrarlo absolutamente rápido...

¿Es posible transferir un directorio entero en una operación en la transferencia de archivo?

Sí

¿UltraVNC proporciona el cifrado de la comunicación?

No. No no directamente. . Because we don't want to. . But UltraVNC features the DSM Plugin System (Data Stream Modification) and some Strong Encryption DSM Plugins are already available (see the links page). . DSM Plugins are really easy to configure and use.

. I'm using RC11b (or RC11c) version over slow connections and having mouse cursor performance problems. . Where is the "second" dot cursor that was there before?

. Over slow connections, you should do the following to get optimal performances: 1. . Disable the Video Driver in WinVNC properties page. 2. . Run the viewer using this option: vncviewer.exe /dotcursor. . Please note that these 2 manipulations are no more necessary with version RC12 and superior.

. I've modified the WinVNC Server default Port to "wxyz". . How do I tell the Viewer to use this port?

. In the Viewer Connection Window, in the VNC Server field, enter: YourServerIPAdr::wxyz (please note the double ":")

. I am in a cybercafe, for instance. . How can I take control of my machine running a UltraVNC Server at home?

. For those that can't install a vncviewer on the machine they are using and that can only use a Web Browser, there's still the possibility of using the Java Viewer that is embedded in WinVNC. . To use it, simply enter this URL in the Web Browser (we suppose that you know your home machine IP Address): http://YourHomeMachineIP:5800 You should then be prompted for the VNC password of your home VNC server. You can even do some file transfers with the JavaViewer !

. What are the advantages of the additional Video Mirror Driver?

. On Win2000 and XP, the Video Hook "Mirror" Driver provides both speed and accuracy for server screen changes detection and ensures hundreds of updates per second. . Whatever the activity on this screen, the server CPU rarely exceeds 25% . . Most of time the WinVNC CPU load is between 0% and 5% ... . When using a Viewer in Full screen mode connected to an Ultra Server using the driver, you really feel like you are in front of the real server!

. Can I use UltraVNC without the Video Drivers under W2000/XP?

. Yep. . Of course. . In this case you get quite good performances but for more CPU.

. I'm quite confused with all these "Update Handling" methods in WinVNC properties...

. Ok, let's sum up. . There are 4 different update handling methods in UltraVNC. . Note that they are automatically adjusted in UltraVNC v1.0.0, depending on the context, in order to ignore settings redondancy.

. Poll Fullscreen - All Win versions. . Optimized (since eSVNC), it doesn't take too much CPU and is really fast (several dozens of updates per second) for an average accuracy. . This option should be systematically selected as it is ignored when a better method is available/selected. . The additional Polling methods should be let as configured by default.
. HookDll - All Win Versions. . Original VNC method, good but not perfect as it doesn't detect all screen modifs. . This option should always be checked as it is ignored when a better method is available/selected. . Activated when "System HookDll" is checked (WinVNC Properties page). . If no driver is used, it is suggested to always use this option along with the Poll Fullscreen option. . Ddihook Driver - For Win9x only. . A small driver than doesn't need special install and that is much better than hookdll and for less CPU load. . Activated when "Video Driver" is checked (WinVNC Properties page) under Win9x servers.
. Video Hook Driver - for W2000/XP only. . Provides maximal speed and accuracy in changes detection for very low CPU activity. . When this option is checked, all the others update handling methods are ignored. . These high performances are above all interesting over fast connections (LAN). . Because of the high mouse cursor updates rate (no Tight Local Cursor here), this driver shouldn't be used over slow/modem connections (automatically switched off in WinVNC). . Activated when "Video Driver" is checked under W2000/XP servers and the Video Hook Driver is correctly installed.
. Low Accuracy (Turbo Speed) - All Win versions. . When this option is selected, WinVNC only checks half the pixels in the screen regions it scans for changes. . The result is -most time- a big speed boost, better responsiveness and some occasional temporary "ghost pixels" in the viewer. . Low Accuracy is not recommended when Video Hook Driver is used: no noticeable speed boost but a lot of temporary "ghosts pixels"...

. Sending CTRL-ALT-DEL to the server does not work. . Why?

. WinVNC must be installed and run as a service to be able to do this operation. . Use the corresponding UltraVNC Server menu shortcut to install this service (from the Start Menu).

. Why implementing a Text Chat when it's so simple to use Notepad?

. I've been practicing the "notepad" trick for years and became tired with it for several reasons:

. Both users can't write at the same time (the mouse and keyboard are shared between the viewer and the server). . You must use a protocole like: my turn, over, your turn, over... . Lot of confusion and wasted time. . This problem disappears with Ultra Chat.
. The user that is on the server can't chat with several people (viewers) at the same time, except in "broadcast mode" where all users see all messages in a single notepad window! . On Ultra Server, a separate Chat window can be opened for each connected viewer.
. Over modem connections, notepad windows can be a nightmare because of scrolling: you type a new character then the whole window scrolls sending several KiloBytes of graphical data over the slow connection... . Ultra Chat only sends ASCII chars.