The UDP or TCP port number used as a destina-
tion port for all senders in this session. If
the IP protocol in use, specified by
intSrvResvFwdProtocol, is 50 (ESP) or 51 (AH),
this represents a virtual destination port
number. A value of zero indicates that the IP
protocol in use does not have ports. This ob-
ject may not be changed when the value of the
RowStatus object is 'active'.