UserCheck objects in the Application Control and URL Filtering rules allow the gateway to communicate...

 The action that is not supported in UserCheck objects is Reject. UserCheck objects in the Application Control and URL Filtering rules allow the gateway to communicate with the users and display messages or requests on their browsers. The supported actions in UserCheck objects are Ask, Inform, Block, and Continue. The Ask action prompts the user to confirm or cancel an action. The Inform action notifies the user about an event or a policy. The Block action prevents the user from accessing a resource or performing an action. The Continue action allows the user to access a resource or perform an action after displaying a message. References: [UserCheck]