STEP BY STEP CONFIGURATION OF (RRAS) REMOTE ACCEES SERVER AND ROUTING WINDOWS SERVER 2008

Routing and Remote Access Service

Updated: September 30, 2009

Applies To: Windows 7, Windows Server 2008, Windows Server 2008 R2, Windows Vista

The Routing and Remote Access service (RRAS) in Windows Server® 2008 R2 and Windows Server® 2008 supports remote user or site-to-site connectivity by using virtual private network (VPN) or dial-up connections. RRAS consists of the following components:

• Remote Access. By using RRAS, you can deploy VPN connections to provide end users with remote access to your organization's network. You can also create a site-to-site VPN connection between two servers at different locations.
• Routing. RRAS is a software router and an open platform for routing and networking. It offers routing services to businesses in local area network (LAN) and wide area network (WAN) environments or over the Internet by using secure VPN connections. Routing is used for multiprotocol LAN-to-LAN, LAN-to-WAN, VPN, and network address translation (NAT) routing services.

Getting Started

• Windows Server 2008 R2 and Windows Server 2008 each include new features designed to enhance security and manageability of RRAS. This topic describes the new features and other significant changes made to RRAS, including the addition of new VPN tunneling protocols, VPN enforcement for Network Access Protection, and Internet Protocol version 6 (IPv6) support. For more information, see What's New in Routing and Remote Access in Windows Server 2008.

NETWORKING TOPOLOGIES . GORVAM SADDAR

LAN Topologies

In the late 1960s and the early 1970s researchers developed a form of computer communication known as Local Area Networks (LANs). These are different from long-distance communications because they rely on sharing the network. Each LAN consists of a single shared medium, usually a cable, to which many computers are attached. The computers co-ordinate and take turns using the medium to send packets.
Unfortunately, this mechanism does not scale. Co-ordination requires communication, and the time to communicate depends on distance - large geographic separation between computers introduces longer delays. Therefore, shared networks with long delays are inefficient. In addition, providing high bandwidth communication channels over long distances is very expensive.
There are a number of different LAN technologies. Each technology is classified into a category according to its topology, or general shape. The first of these is a star topology, as illustrated in Figure 3.

Figure 3: Star topology

The hub accepts data from a sender and delivers it to the receiver. In practice, a star network seldom has a symmetric shape; the hub often resides in a separate location from the computers attached to it.
A network using a ring topology arranges the computers in a circle - the first computer is cabled to the second. Another cable connects the second computer to the third, and so on, until a cable connects the final computer back to the first. This is illustrated in Figure 4.