How do I Share my internet through my Micorsoft Server 2003 Standard machine?

Question

My company recently went from a peer network and added a server. I have not spent much time with server networks but am the inhouse IT man. Now the company wants me to route the internet connection through the server instead of the router we are currently using. Any help would be great

Answer 1

Relatively simple. You'll need two network cards in the server. Give them different IP addresses, of course. Putting them on seperate subnets is also a good idea. You have one NIC connected to your internal network, and the second NIC connected to the external internet. (Not sure of your setup, but you'll need to be sure the only physical connection to the internet runs through the server.)
In DHCP, you push out the default gateway (called "router" in DHCP) IP address of your internal NIC. This forces all clients to route to this NIC to get to the internet. Use routing and remote access to route from the internal NIC to the external NIC. Hard-code the external NIC to have a default gateway of your modem/router (whatever you have to connect directly to your ISP).
All network traffic then HAS to pass through the server to get to the internet. This configuration is exactly what ISA is designed for.