How to block Internet access to all but a few IP addresses or domains?

We would like to set up a Windows 7 PC for online banking. The machine will only be used for this purpose. A browser, probably IE, must be able to connect to the Web site of a bank online banking, so that ACH and wire transfers can be initiated. We have a few additional connections necessary for security and essential services to run properly (for example Trusteer report, a security suite, Windows Update?). But we want to block connections to/from everything so no other type of web browsing, e-mail or other type of network access is possible. We thought that doing so through the Windows Firewall or the snap-snap-in MMC to advanced security seemed way to go, but this configuration correctly so that it works as expected is not exactly obvious or simple for novices.
There are also block USB ports. Would disable us all, but we have the keyboard / mouse to work! We don't want no users unplug the mouse and plug it in USB thumb drives. The less elegant solution for locking already locked box in another box locked for physical access to the external USB ports are blocked.

Two things to look at would be to run it through a server proxy to restrict access to the Internet and use a white list and the issuance of USB you can watch the fact with a GPO.

I hope this helps.

Tags: Windows

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