VNC uses compression algorithms to speed the display process and is supported on a wide range of platforms. The VNC viewer in turn transmits user interactions with the desktop to the VNC server where they are relayed to the desktop environment. The VNC server runs the graphical desktop on the remote system and transmits the appearance of the desktop to the VNC viewer. The system consists of one or more VNC servers running on a remote system and VNC viewers running on a local system. VNC is an acronym for Virtual Network Computing and essentially provides remote access to graphical desktop environments. 6 Establishing a Secure Remote Desktop Session.5 Starting a Graphical Desktop on the Xen domainU Guest.
4 Connecting to the Guest Desktop using VNC Viewer.3 Configuring a Xen domainU for VNC Access.This approach will be covered in the next chapter ( Running and Connecting to VNC Servers on a Xen Guest (domainU) System). A second option is to run one or more VNC servers directly on the domainU system and connect directly to those servers. The first approach (covered in this chapter) involves using VNC capabilities that are built into the Xen guest domain (domain0) to view and interact with the virtual frame buffer (vfb) of the domainU system. In terms of displaying graphical desktop environments for a Xen guest, VNC offers two approaches.
Probably the most flexible option is that provided by VNC. This can be achieved using one of two technologies known as SDL and VNC. It is not uncommon, however, to need to view and interact with a graphical desktop environment running on the guest operating system. So far in Xen Virtualization Essentials we have focused on running Xen domainU systems using just the text based console to interact with the system. Purchase and download the full PDF and ePub versions of this Xen eBook for only $8.99
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