I am new to setting up a domin controller and am running into the following issue. I have active directory setup and designated this server as the domain controller as well as for DNS and DHCP. I hvae set the NIC card to a static IP address 10.1.75.2 with a default Gateway of 10.1.75.1. I have a lyncsys router set as a gateway with the ip address as 10.1.75.1. I have a total of 4 machines pluged into this router. If I try to ping the router I get a responce but if I try to ping the DC I get "Hardware error". If I try to ping another machine from the DC I get "Hardware Error". When I first started to stage these servers I let them get DHCP from our internal DC and all worked but now that I am trying to separate these machines (not pluged into our internal nework anymore) I am running into these issues.