udp or tcp source port specified in an udp or tcp packet
to determine whether or not the packet satisfies this
filter. The value of the corresponding instance of the
ipFilterSrcPortComparison object indicates the relational
operator that the device will use for the comparison.
The value of this object is meaningful only when the
value of the corresponding instance of the ipFilterProtType
object is 6 (tcp) or 17 (udp), and the value of the
corresponding instance of the ipFilterSrcPortComparison
object is not 'none(1)'.