After changing my modem (Comcast ISP), I realized my connectivity problem was being caused by my firewall. Disconnected the firewall, and attempted to reconfigure my network using a new Gateway Address (forced by the modem change which would not accept my original default gateway IP). My domain (let's call it "domain.com") is set up with static IP addressing and my domain controller should resolve to 192.168.7.25. When I ping "domain.com", the ping returns an IP of 18.104.22.168 and, as a result, I can not connect any of my workstations to the domain. So now I have Internet connectivity (which is critical for my business), but I can't connect any of my workstations to my server due to this DNS issue. After trying numerous "solutions" based on Internet articles, I was not able to resolve my issue. There is probably something fairly simple that I need to do, but I'm basically a programmer and need some help to resolve this, so any suggestions would really be appreciated!