Rules
Description
"A rule is the most elementary unit of policy. It may exist in isolation only within one of the major actors of the XACML domain. In order to exchange rules between major actors, they must be encapsulated in a policy. A rule can be evaluated on the basis of its contents".
A rule is composed by a target, an effect and a condition. It is able to add more than one rule to the policy.
Screen overview
Custom attributes
Effect
Two values are allowed: "Permit" and "Deny".
Target
Set of requests to which the rule will be apply.
Visit the Target page for more information
Conditions
The conditions are boolean expresions, to refine the applicability of the rule.
Visit the Conditions page for more information.
https://docs.oasis-open.org/xacml/2.0/access_control-xacml-2.0-core-spec-os.pdf