JeffCantAccessAccount

So I moved across the country. While waiting for my new place to be ready, my server is temporarily located at my parents house. They use a different subnet for their internal devices, so I changed the subnet, the gateway, and the DNS to the OpenDNS address. From the server, or from the internal network, I can access the server with no problem, so it's connected to the network fine. However, it can't seem to access anything - it's complaining about GitHub not being accessible, Plex doesn't work at all. Any ideas what I'm missing? Any suggestions?