The ACME client generates the private key to keep and a signing request to send to the CA. Once the CA validates your challenge type, the client requests the signed cert over that same channel. It doesn’t interact with 80 or 443 except to complete challenges.
The ACME client generates the private key to keep and a signing request to send to the CA. Once the CA validates your challenge type, the client requests the signed cert over that same channel. It doesn’t interact with 80 or 443 except to complete challenges.