This read-write integer sets the TCP port a specific web service entry listens on, with a value of 0 resetting it to that service's built-in default port. An administrator uses this generalized per-service port control, which can apply uniformly across the HTTP, HTTPS, and extra-port services represented as rows in this table. For example, an admin standardizing port numbers across a service table row could set this OID to 0 to quickly restore that service's factory-default port instead of looking up and typing the specific default value.