In a method for controlling an access to at least one resource by a plurality of clients, at least one set of rules is selected from a plurality of available sets of rules upon occurrence of an event relating to an access to the at least one resource by at least one of the clients. The selection depends at least on one of the type of the event, a state of at least one of the clients and a system state. The selected at least one set of rules is applied, resulting in a decision. The access to the at least one resource is then controlled according to this decision.