I'm setting up an Intranet site. I have an IP address that's natted as I'm coming in from the outside. So during the set up, the site used that IP (I guess - first time DNN user). Now it's throwing an error when the internal users try to get there from their IP address (as they can't use the IP I'm on). I'm guessing that I need to add their IP to the Portal Alias? When I try to do that, it tells me that "The Portal Alias is invalid". I can't find where any of these are stored in the configs or the db.

So what are my options here? How can I get DNN to work under both IPs.