As with all VDI and terminal-services implementations, there are significant security benefits, as all the data and applications never leave the corporate environment. Security can be strengthened by using policies to determine whether a client is running on a local network or via a remote connection. These policies can then restrict access to USB devices, printing, and local drive sharing. In this way, it's possible to deploy remote access to users without allowing them to copy any information to their local system, or to temporary storage devices on that system.
Citrix has married VDI to its existing stable of application and desktop delivery mechanisms, and it continues to leverage the stellar ICA protocol to assist in speed, user experience, and manageability. If the company can continue to improve XenServer, XenDesktop could become the showcase VDI implementation. As it stands now, coupling XenDesktop with VMware VI3 is probably the best of both worlds.
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