Using one network card connected to a hub windows 2003 installed and an active dir /dhcp installed win proffessional clients are not getting a default gateway using dynamic dhcp ( have installed two network cards on win 2003 pc and the clients do get a default gateway updated) is it possible to setup a pc to act as a server using one networl card. William

Your server should have DNS running. Your DNS should be forwarded to your ISP's DNS. Your clients should point at your server for DNS and their gateway address should be that of whatever you have between the server/clients and the internet. If it's a SOHO router, use it's LAN side IP address as the gateway. It's important in an AD integrated domain that your DNS be setup properly as clients must get authenticated to the server. With forwarding in place, requests outside the local zone are forwarded to an external source (your ISP's DNS server) for resolution. If you're using two NIC's in the server and it's between the clients and the internet, then it's LAN side IP is the gateway for clients (as well as DNS). If your clients aren't getting the correct gateway address that's likely a misconfiguration issue with your DHCP server.

" is it possible to setup a pc to act as a server using one networl card." Sure. But you won't be routing thru it. You turn dhcp off on the router. You set the server to be dns server as CurtR describes above and you setup dhcp. It gives the correct ips and gateway ip to the workstations and everything is hunky dory. Imagine the power if you knew how to internet search

I have setup a server with two nic's this does work clients get all ip addresses and gateway addresses assigned dynamically to them. I use the internal nic to run dhcp and dns. The way that i setup the single nic is that the dhcp, dns and Ad are set to ip address 192.168.0.16 the default gateway is 192.168.0.15 (firewall) The cable is connected from the firewall to a hub the server is connected to the hub my clients do not get a default gateway dynamically. William