I will use default port 443 and generate a self signed cert, if you have a certificate authority you can generate a cert that can be used for gateway.

If you want to look at configuring WinRM over https see following link: I used the default settings but you can enable WinRM over https if you have certificates that have server authentication set. Once the MSI is downloaded run and following the installation Accept the terms.

Once all pre-req are confirmed, we can go ahead and download Windows Admin centre. Windows Admin Centre uses SMB for some file copying tasks, such as when importing a certificate on a remote servers. See list below for required pre-req before they can be managed in WAC. PowerShell version 5.1 is required on servers that will be added to WAC and will need Window Management Framework (WMF) 5.1 installed, some will require additional steps also.

I have previously looked at Window Admin centre (WAC) tech preview and wanted to configure the latest full release, to see what changes have been made and do a proof of concept to see if this will be useful if it is deployed to our production environment.

Windows live admin center