TightVNC is a free remote control software package derived from the popular VNC software. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer.
TightVNC can be used to perform remote control and administration tasks in Windows, Unix and mixed network environments. It can be very helpful in distance learning and remote customer support.
TightVNC provides these features which are otherwise absent in standard VNC:
- File transfers in versions for Windows.
- Support for video mirror driver (Windows 2000 and above).
- Scaling of the remote desktop (viewer for Windows and Java viewer).
- Efficient "Tight" encoding with optional JPEG compression.
- Enhanced Web browser access.
- Support for two passwords, full-control and read-only.
* Windows Server: Impersonating currently logged on user while processing file transfer requests. Disabling file transfers if current user is unknown or nobody is logged in.
* Windows Server: Fixed rendering problems when multiple CopyRects were combined with normal updates. That could caused distortions that never updated even with full-screen polling active.
* Windows Server: Added new "-silent" command-line option which modifies the behavior of -install, -reinstall and -remove options and makes them not show informational windows on successful execution. Note that -silent should precede other respective options in the command line.
* Windows Server: LastRect, XCursor and RichCursor pseudo-encodings were not properly enabled if they preceded true encodings in the SetEncodings protocol message.
* Windows Viewer: Fixed integer overflow vulnerabilities reported by Core Security Technologies. A specially modified VNC server could currupt the heap of the connected viewer causing its crash or malfunction.
* Windows Viewer: TightVNC Viewer version 1.3.9 saved only successful connections in the list of recently visited VNC servers. Now we save unsuccessful connections too so that users would not ever have to re-type server names after connection failures. Also, several other enhancements were made to the code which handles the list of recent connections.
* Windows Viewer: Fixed a bug with not loading passwords from saved .vnc files correctly if the first byte of their encrypted representation was zero.
* Windows Viewer: Fixed problems under Windows Vista where Windows taskbar could remain visible above the full-screen window.
* Windows Viewer: Fixed a problem with decoding JPEG rectangles wider than 2048 pixels.
* Windows Viewer: Fixed a bug with not saving log file name correctly on using the Browse button.
* Windows Viewer: Usability improvements in the "New Connection" dialog.
* Windows Packaging: Improved installer and uninstall utility. In this version, self-installing executable will not try to install service in Windows Vista. Improved uninstall program always removes the WinVNC service if it was previously installed.
* Unix Server: Applied fixes for 64-bit Linux issues, a patch from Russel Miranda.
* Unix Server: Made the vncserver script read configuration from files (system-wide /etc/tightvncserver.conf and user-specific $HOME/.vnc/tightvncserver.conf).
* All viewers: Allow configuring JPEG quality level regardless of the preferred encoding set. This makes sense because TightVNC Servers can transmit video data as JPEG even if Tight is not the preferred encoding.
* Java viewer: Fixed a bug that caused NullPointerException when connecting to any VNC server not supporting TightVNC protocol extensions.
* Java viewer: Fixed a bug with ignoreCursorUpdates option in 24-bit color mode caused the viewer to disconnect. Thanks to Damien Mascre for pointing out the issue.
* Java viewer: PORT parameter is not required any more, now it defaults to 5900.
* Java viewer: Do not defer update requests by default, to minimize delays in screen updates.
* Java viewer: Improvements in reporting statistics on disconnect.
* Java viewer: Added debugging parameters (DEBUG_XU, DEBUG_CU) that allow using the viewer as a tool for measuring VNC server performance.
* Other minor improvements and bugfixes.