emqx/apps/emqx_dashboard/etc/emqx_dashboard.conf

dashboard {
    listeners {
        http {
            ## Comment out 'bind' (or set bind=0) to disable listener.
            bind = 18083
        }
        https {
            ## Uncomment to enable
            # bind = 18084
            ssl_options {
                certfile = "${EMQX_ETC_DIR}/certs/cert.pem"
                keyfile = "${EMQX_ETC_DIR}/certs/key.pem"
            }
        }
    }
}