Windows 2000 Internet Connection Sharing

Internet connection sharing allows multiple computers to share the same external IP address for web browsing. Windows 2000 ICS routes PPTP packets for VPN, which is impossible to do with IPSEC. In plain english, this means that computers that share the same IP address can establish independent simultaneous connections to VPN servers.

Here's how to set up an Internet connection sharing server and change the network scope to 192.168.10.*.

1- Install Windows 2000 server and service pack 1
2- Install a second network card
3- Right click Network Places and click properties
4- Right click on the external adapter
5- Double click on TCPIP
6- Enter the external IP address, subnet mask, gateway, and DNS servers
7- Click the sharing tab
8- Click the Share this Connection checkbox
9- Click OK
10- Right-click on the internal adapter
11- Set the IP address to 192.168.10.1
12- Go to start/settings/control panel/add/remove programs
13- Click add/remove windows components
14- Add Networking Services/DHCP Protocol and DNS
15- Run Programs/Administrative Tools/DHCP
16- Create a new scope 192.168.10.*
17- Set scope options
* Router = 192.168.10.1
* DNS = 192.168.10.1, external DNS 1, external DNS 2