• Documentation
  • »
  • User Guide

Contents

About This Guide

Chapter 1: Introduction

Principles of VNC remote control

Getting the computers ready to use

Connectivity and feature matrix

What to read next

Chapter 2: Getting Connected

Step 1: Ensure VNC Server is running on the host computer

Step 2: Start VNC Viewer on the client computer

Step 3: Identify VNC Server running on the host computer

Step 4: Request an encrypted connection

Step 5: Connect to VNC Server

Troubleshooting connection

Chapter 3: Using VNC Viewer

Starting VNC Viewer

Starting Listening VNC Viewer

Configuring VNC Viewer before you connect

Connecting to a host computer

The VNC Viewer user experience

Using the toolbar

Using the shortcut menu

Using the VNC Viewer - Options dialog

Managing the current connection

Changing appearance and behavior

Restricting access to features

Chapter 4: Connecting From A Web Browser

Connecting to a host computer

The VNC Viewer for Java user experience

Working with VNC Viewer for Java

Chapter 5: Exchanging Information

Printing host computer files to a local printer

Transfering files between client and host computers

Copying and pasting text between client and host computers

Communicating securely using chat

Chapter 6: Setting Up VNC Server

Licensing VNC Server

Starting VNC Server

Running multiple instances of VNC Server

Working with VNC Server

Configuring ports

Notifying when users connect

Preventing connections to VNC Server

Restricting functionality for connected users

Stopping VNC Server

Chapter 7: Making Connections Secure

Authenticating connections to VNC Server

Relaxing the authentication rules

Bypassing the authentication rules

Changing the encryption rules

Preventing particular connections to VNC Server

Restricting features for particular connected users

Uniquely identifying VNC Server

Protecting privacy

Appendix A: Saving Connections

Saving connections to VNC Address Book

Using VNC Address Book to connect

Managing connections using VNC Address Book

Saving connections to desktop icons

Previous Next Chapter 4, Connecting From A Web Browser

Working with VNC Viewer for Java

You can use VNC Viewer for Java to:

•  Control the host computer using your keyboard and mouse.

•  Copy and paste text between applications running on the client and host computers.

•  Trade performance for picture quality while the connection is in progress.

•  Restrict access to functionality while the connection is in progress.

See the sections below for more information on these issues. For a summary of functionality that is not available, see Connecting from VNC Viewer for Java.

Using the VNC Viewer for Java shortcut menu

VNC Viewer for Java has a shortcut menu to facilitate common operations.

Note: VNC Viewer for Java does not have a toolbar.

To open the shortcut menu, press the F8 key (you may need to hold down the FN key under Mac OS X):

The following table explains the effect of selecting these menu options.

Option

Purpose

Exit VNC Viewer

Close the current connection (and the VNC Viewer for Java window).

Clipboard

Preview the contents of the Clipboard and, providing copy and paste is enabled, paste it to an application running either on the client or on the host computer. See Copying and pasting text.

Note that if you chose not to trust VNC Viewer for Java when you downloaded it, you can only copy and paste text between the two computers via this dialog.

Send F8

Send an F8 command to the host computer. (F8 opens the shortcut menu.)

Send Ctrl-Alt-Del

Send the CTRL-ALT-DELETE command to the host computer. (Pressing this key combination would be interpreted by the client computer.)

Refresh screen

Refresh the display of the host computer’s desktop.

New connection

Start a new connection to the same host computer, or to a different one, using the same web browser session. You do not need to download VNC Viewer for Java again.

Options

Configure most aspects of VNC Viewer for Java while the current connection is in progress. See Using the VNC Viewer - Options dialog.

Note that some options must be configured before you connect. See Configuring VNC Viewer for Java before you connect.

Connection info

Display technical information about the current connection, such as the encryption method and compression format. You may need this if you contact Technical Support.

About VNC Viewer

Display information about VNC Viewer for Java. You may need this if you contact Technical Support.

Dismiss menu

Close the shortcut menu.

Using the VNC Viewer - Options dialog

The VNC Viewer - Options dialog enables you to configure VNC Viewer for Java while the current connection is in progress:

Note: Some VNC Viewer for Java options must be configured before you connect. For more information, see Configuring VNC Viewer for Java before you connect.

To open the VNC Viewer - Options dialog, select Options from the shortcut menu. More on this menu.

The following sections explain the options in this dialog.

Trading performance for picture quality

You may be able to enhance the performance of VNC Viewer for Java by reducing the number of colors used to display the host computer’s desktop. To do this, turn off Auto select and choose either 256, 64, or 8 colors. These options are on the Encoding tab.

You can also choose an alternative to the default ZRLE encoding. The Hextile and Raw encodings require increasingly less processing power to display the host computer’s desktop, though note they also require progressively more bandwidth.

Restricting access to functionality

You can quickly prevent all interchange with the host computer, making VNC Viewer for Java ‘view only’. To do this, turn on View only (ignore mouse & keyboard). This option is on the Inputs tab.

You can disable copy and paste, or just copy and paste in a particular direction. For more information, see Copying and pasting text.

Troubleshooting display

If the mouse cursor is not behaving in the expected way, turn off Render cursor locally. If the screen is not updating properly, turn off Fast CopyRect. These options are on the Misc tab.

Copying and pasting text

You can copy and paste text between applications running on the client and host computers. This feature works in the same way as it does for VNC Viewer. See Copying and pasting text between client and host computers for more information.

You can preview the contents of the Clipboard to see what text is available to paste. To do this, select Clipboard from the VNC Viewer for Java shortcut menu. More on this menu. The VNC Viewer - Clipboard dialog opens:

Disabling and enabling copy and paste

You can disable copy and paste while the current connection is in progress. To do this, open the VNC Viewer - Options dialog. More on this dialog. On the Inputs tab, turn off Accept clipboard from VNC Server and Send clipboard to VNC Server.

Note you can turn these options off separately in order to disable copy and paste in one direction only.