One embodiment disclosed relates to a method for a switch to respond to a new client. A new client is detected at a port of the switch. The switch temporarily assigns the port to be an untagged member of a virtual local area network (VLAN) which is configured for unauthorized clients. Initialization...http://www.google.de/patents/US20040250117?utm_source=gb-gplus-sharePatent US20040250117 - Method and apparatus for access security services