BI Publisher not working over the Internet

I am testing BI Publisher over the Internet, after SSO/BI Publisher Security or manually login the address bar changes from DNS name to Server/hostname in the address bar, since only DNS is made public over the Internet we get page not found.  Is there a way to prevent BI Publisher from using server name after login seems redirection is taking place. Testing Internally on our network everything works as DNS and Server/Hostname all resolve.