A zone locking system detects unauthorized network usage internal to a firewall. The system determines unauthorized network usage by classifying internal hosts inside a firewall into zones. Certain specified zones are unauthorized to initiate client communications with other selected zones. However,...http://www.google.fr/patents/US20040088571?utm_source=gb-gplus-shareBrevet US20040088571 - Network service zone locking
Numéro de demande: 10/106,298 Numéro de publication: US 2004/0088571 A1 Date de dépôt: 25 mars 2002 Brevet délivré: US7644151 ( Date de délivrance 5 janv. 2010)