10. A rule-based enforcement platform applicable for access control to at least one information resource associated with at least one application within a computer network, the platform comprising: a. a rule engine being capable of handling facts and applying inference rules on those facts, the rule engine storing the rules; b. a constraint specification console providing an interface to specify application specific constraints based on agreed-upon application specific context sources; and c. a rule engine adaptor providing an access point to the constraint specification console so as to be capable of forwarding constraints specified within the constraint specification console to the rule engine so that the constraints get stored in the rule engine as a set of rules, uniform access points for application specific context sources to access the platform so as to enable the application specific context sources to communicate with the rule engine such that context information provided by the context sources being expressed as facts within the rule engine and an access point for an application specific constraint enforcement point to access the platform so as to allow access control to the at least one information resource based on the application specific constraints with regard to context information originating from the context sources.
10. A rule-based enforcement platform applicable for access control to at least one information resource associated with at least one application within a computer network, the platform comprising: a. a rule engine being capable of handling facts and applying inference rules on those facts, the rule engine storing the rules; b. a constraint specification console providing an interface to specify application specific constraints based on agreed-upon application specific context sources; and c. a rule engine adaptor providing an access point to the constraint specification console so as to be capable of forwarding constraints specified within the constraint specification console to the rule engine so that the constraints get stored in the rule engine as a set of rules, uniform access points for application specific context sources to access the platform so as to enable the application specific context sources to communicate with the rule engine such that context information provided by the context sources being expressed as facts within the rule engine and an access point for an application specific constraint enforcement point to access the platform so as to allow access control to the at least one information resource based on the application specific constraints with regard to context information originating from the context sources. 12. A rule-based enforcement platform according to claim 10 , which is application independent.