A system and method for an end user to change the operation of a data flow filter mechanism, such as a firewall, that operates to control data flows between a plurality of protected computing devices and one or more non-protected computing devices. With the system and method, an administrator of a sub-network...http://www.google.de/patents/US7882540?utm_source=gb-gplus-sharePatent US7882540 - System and method for on-demand dynamic control of security policies/rules by a client computing device