I have a client with an SBS 2003 server that until yesterday morning was working fine - DC, DNS, DHCP and file server for about 40 desktops. Apparently the Internet 'died' sometime Sunday and no one was able to access the Internet or shared folders this morning. They then rebooted the server, but no joy.
The server can ping the router, the router is connected to the Internet, but the server cannot access the Internet. As it is running DNS the machines can't access either.
I have checked DNS - it only points to itself. No error msgs in event viewer about DNS. I have switched from 1 onboard NIC to the other (previously disabled). I have changed the router, unplugged and replugged the switches...
From the server I can ping the external static IP of the router, but nothing past that. I can ping using IP address or machine name on the network.
From a workstation I am unable to access the Internet even when specifying a DNS server other than the server itself.
From a workstation I am able to ping the server, and able to connect to shared drives on it.
Everyone is able to ping the network printer.
From the router i can ping and tracert without a problem.