I am having issues getting my client computers (small network of less than 50 clients) to get internet access. I am using 2k8. One server with multiple roles. My ISP gave me a static ip and I have the external NIC configured as they specified. The server can access the Internet just fine. The server can also see all of the computers on the network. The DHCP is handing out IPs to the terminals in the 10.19.0.x (x= 50 to 200) scope. The clients can ping each other and the server but not the ISP's dns or anything outside the network. The clients can also access network resources such as printing. To the best of my knowledge, the only thing the clients can not do is venture out beyond the network.
A rough network overview. Comcast is the ISP and provided a modem in which their cable drops into. From there cat5e to the patch panel and directly to the server. The external NIC is configured as per the ISP instructions. The internal NIC: I set the IP to 10.19.0.1. On the second NIC should the primary DNS be itself? This I wasn't too sure of. It currently is set as such. I believe that I have also set the subnet to 255.255.255.0 on the internal NIC. I have the DHCP and DNS roles installed. The DHCP has been authorized in AD and seems to be correctly handing out IPs.
I would really appreciate some advice and/or suggestions as to how to get the clients access to the Internet. My instinct says that the trouble is somewhere on the server, but I have run out of things to try (well, that I know of at least). Thanks in advance!