Applicable software
All the information in this Guide applies to connections established between a client computer running the latest version ofVNC Viewerand a host computer licensed to useVNC Server (Enterprise). Unless otherwise stated, this combination is assumed. To see how to set these applications up, readGetting the computers ready to use.
Note that general principles of remote control, and information relating to particular supported features, also apply to connections established between any combination of the products and license types listed below.
VNC Server (with different licenses applied)
?VNC Server (Personal)Contains most RealVNC remote control features. A thirty day trial is available.
?VNC Server (Free)Contains basic remote control features.
For more information on licensingVNC Server, start withLicensing VNC Server.
VNC Viewer
?VNC Viewer for JavaThis application is freely available to download on demand fromVNC Server (Enterprise)orVNC Server (Personal).
?VNC Viewer PlusThis application is available to purchase from www.realvnc.com/products/viewerplus/.
?VNC Viewer for iOSThis application is available to purchase from the Apple App Store. Visit www.realvnc.com/products/ios/ for more information.
?VNC Viewer for AndroidThis application is available to purchase from Google Play. Visit www.realvnc.com/products/android/ for more information.
When a connection is established,VNC Viewerdisplays the host computer’s desktop in a new window on the client computer:
A.Desktop of a client computer running Windows 7.B.VNC Viewer displaying the desktop of a host computer running Ubuntu 11.04 Linux.
Note:If the host computer is running UNIX/Linux,VNC Viewermay display avirtualdesktop instead, in which case what you see isnotthe desktop visible to a host computer user. For more information on this feature, seeRunning multiple instances of VNC Server.
Note that otherVNC Viewerusers may be connected to the host computer and controlling it at the same time as you. In addition, a host computer user may be present. Operations may occur unexpectedly!
Controlling the host computer using your mouse
Your client computer’s mouse is now shared with the host computer. This means that:
? Moving the mouse and clicking within theVNC Viewerwindow affects the host computer and not the client.
? Moving the mouse and clicking outside theVNC Viewerwindow, or on theVNC Viewertitle bar or window buttons (Minimize,Maximize, andClose), affects the client computer and not the host.
Note:If your mouse has no effect on the host computer, it may have been disabled. For more information, seeRestricting access to features.
If client and host computers have different numbers of mouse buttons, you can configureVNC Viewerto emulate those you do not have. SeeConfiguring your mousefor more information.
Controlling the host computer using your keyboard
Your client computer’s keyboard is now shared with the host computer, with the exception of:
? The function key that opens the shortcut menu (F8 by default).
? The CTRL-ALT-DELETE key combination.
These commands are interpreted by the client computer. Alternative ways of sending them to the host computer are available; start withUsing the shortcut menufor more information. Under Windows, note you can choose for certain other keys or key combinations to be interpreted by your client computer rather than the host. SeeConfiguring your keyboardfor more information.
Note:If your keyboard has no effect on the host computer, it may have been disabled. For more information, seeRestricting access to features.
Note it is possible for client and host computers to have different types of keyboard. Not all the keys available to a host computer user may be available to you, and some keys with the same name may have different behavior. This is especially likely if you are connecting to Mac OS X from Windows or Linux with a PC keyboard, orvice versa; see www.realvnc.com/products/vnc/documentation/latest/misc/keyboard-mapping/.
Interacting with VNC Server
When you connect, aVNC Servericonis displayed on the host computer’s desktop, shaded black:
(Windows 7 client computer; Ubuntu 11.10 Linux host)
TheVNC Servericon confirms thatVNC Serveris running on the host computer, provides information to helpVNC Viewerusers connect, confirms that at least oneVNC Vieweruser is connected (the icon changes color), and has a shortcut menu to perform useful operations. All this information and functionality is available to you as a connected user. For more information, seeWorking with VNC Server.
Note:Under UNIX/Linux, in some circumstances, theVNC Servericon is not shaded black. Under some versions, noVNC Servericon can be displayed. In the latter scenario, shortcut menu commands are available from theMorebutton on theVNC Serverdialog.
Note that theVNC Servericon also provides access toVNC Serveroptions. However, you cannot configureVNC Serverin Service Mode unless you know the credentials of a user with administrative privileges on the host computer (or are logged in as one). For more information, seeUsing the VNC Server – Options dialog.
VNC(Virtual Network Computing) 是一款开源的远程控制软件，管理员通过它不仅可以在运行程序的本地机上察看桌面环境，而且可以从 Internet 上的任何地方察看远程机器的运行情况。而且它还不受操作系统平台限制，具有跨平台的特性。可以从 linux 上用 VNC 查看 Windows 系统的机器，也可以在 Windows 系统上利用 VNC 查看 linux 系统的机器。可以上 RealVNC 的官方网站下载 VNC 的安装文件，RealVNC 分为免费版、专业版和企业版，其中专业版和企业版都是要收费的，免费版可以免费使用。不过功能相对于来说会比专业版和企业版少一点，不过对于一般的管理要求，还是可以胜任的。安装VNCTarball 安装方式：[root @ test root] # tar xvfz vnc-4_1_2-x86_linux.tar.gz[root @ test root] # cd vnc-4_1_2-x86_linux[root @ test vnc-4_1_2-x86_linux] # ./vncinstall /usr/local/bin[root @ test vnc-4_1_2-x86_linux] # cp vnc.so /usr/X11R6/lib/modules/extensions/RPM 安装方式：[root @ test root] # rpm –ivh vnc-4_1_2-x86_linux.rpm启动 vncserver[root @ test vnc-4_1_2-x86_linux] # vncserverYour will require a password to access your desktop.Passwd: 输入密码Verify: 再次输入密码确认New ‘test:1’ desktop is test:1# test:1 test是主机名，:1 是登录VNC 的窗口号。Creating default startup script /root/.vnc/xstartupStarting applications specified in /root/.vnc/xstartupLog file is /root/.vnc/test:1.log第一次执行 vncserver 时需要设定提供远程连入时的访问密码，密码会记录在 /root/.vnc/passwd 文件中,日后可执行 vncpasswd 更改密码。现在就可以通过 vncviewer 连入操作[root @ test vnc-4_1_2-x86_linux] # vncviewer 192.168.98.32:1会弹出一个对话框，要求输入访问密码，输入密码后，即可连接成功。VNCServer 的X 桌面默认为 twm, 这时连接进去只能看到终端界面，而看不到远程桌面界面。可修改 /root/.vnc/xstartup 文件，将其改为 GNOME 或 KDE 桌面：GNOME：[root @ test vnc-4_1_2-x86_linux] # vi /root/.vnc/xstartup#！/bin/sh[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresourcesxsetroot –solid greyvncconfig –iconic &xterm –geometry 80×24+10+10 –ls –title “$VNCDESKTOP Desktop” &gnome-session &KDE:[root @ test vnc-4_1_2-x86_linux] # vi /root/.vnc/xstartup#！/bin/sh[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresourcesxsetroot –solid greyvncconfig –iconic &xterm –geometry 80×24+10+10 –ls –title “$VNCDESKTOP Desktop” & startkde &修改完毕后须重新启动 VNCServer[root @ test vnc-4_1_2-x86_linux] # vncserver –kill :1 && vncserver :1[root @ test vnc-4_1_2-x86_linux] # vncviewer 192.168.98.32:1连接后即可使用 GNOME 或 KDE 桌面啦（就像 WinXP 的远程桌面一般），也可以通过 WEB 访问，在浏览器中输入http://192.168.0.252:5801 即可，VNC 默认的端口号为5801。用 netstat –tlunp | grep 01,可以查看VNC 的端口是否牌监听状态，如看到5801 ，则表示 VNC 端口已正常启动。
遇到错误：
realvnc connect:connection refused(10061)
10061 means that the server computer was contactable, but not acceptingconnections on the port you were trying to connect to. This might bebecause VNC Server 4 was not running, or because it couldn't open therequired port.Given that you are running 3.3.3R3 alongside 4, I'd guess that you started 4after you started 3.3.3R3 and that you haven't told 4 to run on a differentport number yet - in that case it will try to open the same port as 3.3.3R3,fail, and not try to re-open that port until it is restarted or a setting ischanged.
A few things...I assume that since you built it, the XP firewall was opened for theincoming port (5900 as default)...However, the port could be blocked by:a) Any router/switch the XP host is attached tob) The Hughes 'modem' does not allow incoming IP connectionsc) Hughes itself is blocking it before the signal is being set to the skyRemember Hughes is very different than DSL/Cable/Fiber connections...
If you didn't import your VNC 3.3.7 settings using the Import LegacySettings option then you might have found VNC Server 4.1.1 running on port5900, but not port 8500, which is not a standard RFB port.The problem you were having with VNC 3.3.7 suggests that your VNC 3.3Default settings had got out of sync with the per-user settings.
You are attempting to connect to the VNC server computer directly, ratherthan via the SSH tunnel port on the viewer machine. i.e. on the viewermachine, enter localhost:2 in the Server field.
“但行好事，莫问前程”，往往成功的几率反而更大些;
