This guide highlights the important features that are included in Microsoft's Routing and Remote Access Service Update for Windows NT Server 4.0 and how these features benefit customers. This service, which is available to Windows NT Server 4.0 customers at no charge as a released-to-web product, enables routing over IP and IPX networks and is particulary useful to branch office networks. This new unifed Routing and Remote Access Service running on Windows NT Server provides network managers with routing and internetworking that is easy to use, flexible, and affordable. Significantly, this service update also provides an extensible, open platform for value-added development for a variety of internetworking solutions.