1. Register your domain name. Why don’t you want to register a domain?
You will need to register the domain name .
you can install the TS , The grace period begins the first time the terminal server accepts a client connection. It ends after you deploy a license server and that license server issues its first permanent CAL, or after 120 days, whichever comes first
the port for vpn will depend on whether you use PPTP or L2tp
You muct only forward ports to Static ip addresses