I've been running DNN now for a year or so on a local intranet. Now they are wanting me to grant access to the data on it to a satillite office. Here's my issue.

Locally everything works great. From the remote location when a user access the page from http://www.mydomain.com/DNN the applications works great. The problem arises when they try to access it via http://servername/DNN. The home page loads correctly and any other page that i grant to all users. It is when they goto log in, the login page loads fine, when they enter user/pw the page just sits there and eventually times out.

I'm missing a web.config setting or IIS setting somewhere or the VPN is blocking something? I'm not too familiar with the core code.

It would be ok if the suit pant characters didn't insist that everyone access it by http://servername/dnn

If your users are accessing via Webvpn then I would definitely look at postback issues. If you have a lan to lan vpn set up how are the remote users getting dns resolution? try setting up a host file entry on one of the remote machines (c:\windows\system32\drivers\etc\hosts) make an entry to resolve the host to the IP (make sure not to save it as a text file) and see if that makes a difference. You may need an entry on the remote office DNS device to let them get to it.