Dell OptiPlex VDI Blaster Edition Windows Embedded Standard 7 (WES7) - Adminis - Page 14

Using the FBWF The FBWF operates by providing a shadow write to the system RAM. When enabled, any writes that are normally written to the storage media, are instead redirected to the RAM overlay. During a reboot, this overlay is discarded so the operating system remains in its original state. As its name implies, FBWF is based on files. This means you can exclude certain files and directories from the protection of the write filter. Any files that are in this list are ignored by FBWF and subject to modification (or deletion) just as they normally would on any standard Windows XP environment. The OptiPlex thin clients include a management utility for configuring FBWF. The FBWF Manager utility can only be accessed by Administrators. To open the FBWF Manager, log-in as the administrator. • Click Start-> All Programs-> FBWFGUI. • This will open the FBWF Manager window. By default, FBWF is enabled with basic exclusions set for the Persistent Registry and Documents and Settings for all users. This means any changes made under the C:\Documents and Settings folder, such as desktop icons, start menu items, and browser favorites, will be written directly to the flash device immediately and without overlay protection. What is Persistence? Persistence in its simplest definition is the term used to describe data on a local drive or disk that exists and survives from session to session. Persistent data will be secure after every reboot and every change made will be applied until another user reconfigures your changes. If you do not have the File-Based Write Filter installed on your terminal for protection, your local drive remains in a Persistent state. All changes made to the desktop, program files, user settings files, or important Windows system files are permanently stored on the drive or disk. In the unfortunate event of a malicious network attack or virus, your files may be harmed in the process if Persistence is left on. When the FBWF filter is enabled and files can be protected, all changes made, including accidental virus entries, are wiped upon reboot. 14 | Understanding Your Thin Client