Ports - Internet Ports - Web tab
From this tab you can enable and configure TCP/IP and TLS ports for the HTTP protocol.
On servers that use Internet Site documents, Internet Web services obtain port authentication settings from the Security tab of an Internet Site document, rather than from the Server document. As a result, when Internet Site documents are used, TCP/IP and TLS port authentication settings are not available in the Server document. Settings in the Server document, however, still provide the port numbers and status for the TCP/IP and TLS ports, and enable the HTTP service to honor server access restrictions.
If the server uses Internet Site documents, then you must use Site documents to configure all Internet protocols on the server. If a Site document for a particular Internet service is not present in the Domino® Directory, or the authentication options in the Site document for that service are set to No, users cannot connect to the service. Clients attempting to connect to the service receive the following error:
This site is not enabled on the server.