how to configure Nat(Network Address Translation ) in window server 2003

how to configure Nat(Network Address Translation ) in win 2003

Situation: I am an administrator of a small company with 20 computers. I’m getting my internet services through a DSL connection. I’m using Microsoft technologies; hence, my server is Windows 2003 Server. I want to distribute internet to all the computers through the main server.

Solution: You can use Windows Routing and Remote Access tool for this situation. Follow the following steps to provide internet facilities to every computer using your Windows 2003 Server.

1- Firstly, you will need two IP addresses, one for the DSL modem interface and the other for the local LAN interface. Either you can install two NICs (LAN Cards) or alternatively you can assign two IP addresses to your existing NIC. One IP address is for the LAN and the other is for connecting to the internet.

2- In your Windows 2003 Server, go to Start –> All Programs –> Administrative Tools –> Routing and Remote Access

3- Right Click the server in the left hand pane and select “Configure and Enable Routing and Remote Access”

4- Routing and Remote Access Wizard will appear, click Next.

5- Select Network Address Translation (NAT) and then click Next.

6- Select the interface that connects you to the internet and click Next.

7- Click Finish.

This will enable NAT on your server. Now configure the network settings of your client computer and give the default gateway of your server LAN interface. Or if you have setup a DHCP server in your network, configure the DHCP server accordingly.

This is all that is required