I have a Windows Server 2008 R2 Domain Controller. I can RDP, ping, and access the webserver while in the local area network on the LAN NIC. But I cannot RDP, ping, or access the webserver while outside the network.
If I restart the server, however, I can do all 3 for a small period of time (about 2-3 minutes). After that, the server no longer responds to any requests.
I have made sure that all the correct ports are open and have even tried turning of the firewall: no luck.
Why would requests from the WAN not work while requests from the LAN are?