I am not sure what settings need to be changed on our current server for me to install the Forwarding server. 

Do I need to change the .local server to the full dc.domain.com (thats the name I plan on using for outside network)  

I do not have the .COM DC server inhouse so I cant make a .COM change on the inside, only for the outside network.

What do I need to do to get the computers be able to connect to the DC server from inside the network and outside Fowarding network. 

thank you