Techniques for forming a rule to respond dynamically to requests for one or more resources on a network include providing, to a resource administrator, an interface for specifying the rule. The interface includes a first presentation area that displays data defining request information items associated with a request for the resource. The interface also includes a second presentation area that displays data defining access information items used to cause a server to respond to the request. The interface also includes a first input area for receiving commands from the resource administrator for deriving a value for at least one of the access information items. Code, which can be executed to apply the rule specified in the interface, is automatically generated. The code is automatically retrieved and executed when a request is received with a particular value for at least one particular request information item.