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VNC® Enterprise Edition
A much enhanced version of VNC, developed for use in enterprises of all sizes.

Designed and built from the ground up by the original inventors of VNC, Enterprise Edition provides secure, robust and easily-administered remote-control with a minimum of fuss. Existing Free Edition users considering upgrading may find this feature comparison useful. There is also a handy datasheet (pdf). 

The core Enterprise Edition features are as follows.
Printing

Print files on the computer running VNC Server to the default printer attached to the computer running VNC Viewer.
Cross-Platform VNC Chat

Chat with other connected users, or with a VNC Server user, across all supported platforms. Previously, you could only use VNC Chat if both VNC Viewer and VNC Server were running under Windows.
Integrated Session Security

Integrated Session Security provides protection from connection snooping, man-in-the-middle attacks and packet-tampering attacks, to name but a few.

    * VNC Server Authentication uses 2048-bit RSA keys to verify identity.
    * VNC Viewer Authentication supports both usernames and passwords of up to 256 characters each.
    * Secure Communication with 128-bit AES?the experts" choice for high performance encryption.

Platform-Native Authentication

Platform-Native Authentication removes the need for separate VNC and system passwords. Users can access their desktops using the same credentials with which they log on to the system. For Windows this is authentication via NT-Domain or Active Directory, and for Unix is via NIS/NIS+.
One-Port H TTP & VNC

One-Port H TTP & VNC allows VNC Server to serve VNC Viewer for Java and VNC sessions through a single TCP port, simplifying NAT and firewall configuration. 

H TTP Proxy Support allows you to configure VNC Viewer to connect through various web proxies and filters, making it as simple to use as a web browser.
Desktop Scaling

Desktop Scaling to a particular size, by a particular ratio, or dynamically to whatever size you choose.
Cross-Platform Interoperability

Cross-Platform Interoperability with the other members of the VNC Enterprise family.
File Transfer

File Transfer allows you to copy files between the two computers over the VNC connection?no need for additional configuration.
VNC Address Book

VNC Address Book makes it simple to store shortcuts to VNC Servers conveniently and securely.
VNC Deployment Tool

VNC Deployment Tool for Windows helps to automate the deployment and configuration of VNC software throughout your enterprise.
Free Upgrades 
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