Website transferring from web hosting to my local server

I'v a virtual dedicated server away from my country in Australia, hosting 5-6 websites and urls. I'v purchased hp dl380 g8 server and installed Windows Server 2019 with licenses.I want to host all websites on my local server. I'v copied all websites on my local server, iis is ok on local,how can I configure the port forwarding/dns DNS/ do I need dyndns account?/what settings on my current host (Australia) that if any one type www.mydomainsetc.com my local windows server 2019 should response.