Server document - Ports tab
After you install and set up a Domino® server, review the list of network ports that were enabled by the Server Setup program. Unless you customize network settings during setup, Domino® enables ports based on the current operating system configuration.
To conserve system resources, disable the ports for protocols that you do not need. To perform ports-related tasks such as disabling or enabling a network port on a server, you begin by using the Tools pane in the Domino® Administrator. Then, you return to this tab in the Server document to complete the changes to the server's network port setup.