Internet Connection Sharing

[DanielKBates]

I have a small network with a Windows 2000 Server Domain controller complete with DHCP, DNS and Active Directory. I have two NICs in this and an ISDN connection. I want to set up a centralised shared internet connection as all the users currently dial up from their own machines. What I was going to do was use one NIC for the internal network and the other one and the ISDN for internet but I dont think this will work because internal network connectivity will be lost because of different IP address ranges. When I share the connection it changes the IP address on my domain controller. I am using a strange IP range though.......10.0.0. and it changes it to 192.168.

Is there any way round this? What IP address range should i use? Should I let it change the address and then change the DHCP to accompany this?Any advice very much appreciated.

 

[TCanniff]

The IP address range 192.168 is commononly used for local networks (10.0 is too, but older I don't see it so much anymore).

If you don't need to use your domain security to control who has internet access simply plugging the internal side of your ISDN router into the network will make it available to everyone. Many ISDN routers are also switches/hubs themselves and provide DHCP to the local users (handy for home users without domain servers) so this may need to be disabled. I have used this scheme in the past and it worked fine but haven't implemented ISDN utilizing the domain controller to restrict access.

Using the PDC to control internet access is easy with a standard modem or a cable modem that includes a USB (or other) port so that the domain controller is the gateway rather than the router itself. May also work with your dual NIC situation if your router is trying to provide DHCP and you disable it. Good luck.

 

[Seumas13]

Try changing the IP Address to your 10.0.X.X address after ICS has been installed.

 

[ashpp]

You can't change the IP address with ICS the server has to be 192.168.... Why not just setup NAT & RRAS? Its much better.