METHOD AND APPARATUS FOR IMPLEMENTING A LAYER 3/LAYER 7 FIREWALL IN AN L2 DEVICE

摘要

Methods and apparatus for transferring packets in a packet switched communication system. A system (100) is provided that includes an L2 device (106) including a controller (204) determining for each packet received whether the received packet is to be inspected, an inspection device (210) operable to inspect and filter packets identified by the controller (204) including using a zone specific policy and an L2 controller (230) for transferring inspected packets in accordance with L2 header information using L2 protocols.