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.