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The router is a device or program applications that work between two or more of the different networks to carry data from one network to another. Routers commonly used for connecting between networks in a LAN (local area Netwrk), network LAN with WAN (Wide Arena Network), WAN networks with WAN or LAN menghubngkan also for a telecommunications service to be able to access the public network (Internet). Maybe some people think Router is a bridge (bridge), but more than that a router can filter traffic data, dividing the network into multiple sub-networks and routing to obtain the shortest path or also provide an alternative other links if the links are The main break or is busy.
There are 2 kinds of routers, the router device and router software. Router device is a device or hardware that serves as a router such as Cisco Routers, Maipu, 3Com, and other The Mikrotik lian. Router Software is an application program is installed on an operating system that serves as a router for example RRAS (Routing and Remote Access), WinRoute, WinGate, WinProxy SpyGate and.
In this article the author wants to share the knowledge how to get Windows Server 2008 as a Router. In order to enable Windows Server 2008 as a router you need to install (add role) RRAS first. RRAS (Routing and Remote Access) is a network service that can serve as:

- Dialup remote access server.
- VPN (Virtual Privite Network) Server.
- Router
- NAT (Network Address Translation).
- Dial-up and VPN Demand Dial Router.
RRAS found in Windows versions 2000, 2003, 2008 and 2008. As a simple example I will create a router to connect two different networks as shown in the picture below.

Here are the steps to create a Windows router:

1. To perform this exercise, before Windows Server 2008 should be installed and have two NICs (Network adapters).

2. Next open Server Manager, click the Server Manager icon located on the taskbar.

3. Then on the left menu click the Roles and select Add Roles.

4. Roles RRAS features found on the Network Policy and Access Services, click the Network Policy and Access Services and then click Next.

5. Introduction window appears Network Policy and Access Services click the Next button.

6. Since we only want to functioning as a router only, the select option Routing and Remote Access services, if you want to also enable a RADIUS server you can select the option Network Policy Server. Check the option Routing and Remote Access services (as shown below) and then click the Next button.

7. Confirmation window appears and then click the Install button to complete.

8. Furthermore lo call Routing and Remote accesss from menu Start - Administrative Tools select Routing and Remote accesss.

9. Once the window is open Routing and Remote accesss langah next step is to configure the Routing and Remote accesss as a Router, click on the Routing and Remote accesss - Server Status kemduian right click on the name of the server select Configure and Enable Routing and Remote Access.

10. Welcome window appears click the Next button.

11. Then a window will appear Configuration, here there are many configuration options such as VPN, NAT, VPN and NAT, Secure connection between two private networks. Since we only want memfungiskan as a router configuration select the Custom option and then claim the Next button.