This table defines a policy rule by associating a network
objects with a filter or a set of filters and an action to take
when the filter is true.
The implementation may choose to allow modifications to this
table only under certain SNMP contexts. The
etsysFWPolicyRuleDefStorageType for a given SNMP context may be
readOnly, meaning the row cannot be modified or deleted. In
another SNMP context, the etsysFWPolicyRuleDefStorageType value
could allow the row to be modified or deleted.