Before you get started, make sure that you have the following information:
A domain that you own, for example,
A subdomain that you want to use, for example,
A valid TLS certificate for your subdomain. If you don't have one, you can generate one with a service such as:
Make sure that you have the TLS certificate (PEM-encoded) for your subdomain and the 2048-bit private key (PEM-encoded) before beginning.