I am trying to set up an NT server to access our local LAN and the internet simultaneously. The internet connection is a fractional T1 going through a router/gateway (from VINA technologies). I need this NT server to talk to the private LAN and to the internet because I need it to offer internet email through exchange server. Also, I'd like to run WinProxy on it when I get this straightened out. I only have one NIC in the server, but would get a second if that is required.
Additional info: I have internet IP addresses given to me by my ISP so I can assign one to the NT server (which is also my Domain Controller on a small network). Also, I have been able to get workstations to connect to the internet through the router, but then they cannot access the local lan (except for the macs which access the local lan via appletalk). One final note: my local LAN's IP addresses are not in the proper class C range... could this be a problem when setting up the NT server with 2 IP addresses (one for the LAN, one for internet)?
I realize this is an involved question, but it seems this thing needs to be done by lots of people, so I'm sure somebody out there knows a good way to do this.