IP whitelisting is not possible from host server

I'm trying to whitelist an IP address from the host web server, however I am unable to do so, due to some novel IP address configuration on the server itself. It logs that the traffic is coming from the IP address of the server rather than the loopback address `127.0.0.1`.

Is it possible for the IP whitelisting to include the IP address of the server itself? It doesn't look like this is stored in DNN, but it looks like you are able to get it from [ASP.NET](https://stackoverflow.com/questions/646525/getting-the-ip-address-of-server-in-asp-net).

We will need to be certain that the source of IP address cannot be compromised as this would be exploitable.