Windows EBS supports the network topologies that are most likely to be implemented in a typical midsize business. These supported topologies include the following:
Networks that contain one subnet at a single location (single-subnet networks)
Networks that contain more than one subnet at one or more locations (routed networks)
Networks that span more than one location, with site-to-site virtual private networks (VPNs) connecting them, and one or more subnets (VPN networks)
You can deploy Windows Essential Business Server in an existing network that contains one or more existing servers operating within a single subnet. In this topology, the recommended installation is to replace your existing firewall ...