Ok I just set up a brand new 2012 R2 standard server, I have done this many times, the only difference is this is the first time I am using an AT&T fiber circuit.
The problem I am having is I configured the DHCP and I can connect from a computer to the server but none of the connected computers can get internet. The server has internet but not any of the connected computers.
I have checked and check the settings everything seems fine, but I am also looking too hard and may be missing something.
The only difference is I was a little confused by the settings for AT&T and making sure I have the right settings for the NIC card and DHCP.
AT&T provided me with 6 IP's, so I used one of the provided IP's ad the server IP, I used their default gateway and their subnet mask. then in the dns I used my ip as the primary and their default gateway as the secondary.
When I do a test from the computer it tells me "the default gateway is not available".
Any ideas I have tried just about everything I can think of. I am sure it is just something I am overlooking...