Abstract: Described are methods and apparatus, including computer program products, for propagation protection within a network. A transparent network appliance monitors data being transmitted from a first portion of the network to a second portion of the network through the network appliance and analyzes the data to determine whether the data represents a threat to the network. The network appliance transmits the data to the second portion of the network if the data does not represent a threat to the network or prevents transmission of the data to the second portion of the network if the data represents a threat to the network.

Abstract: Described are methods and apparatus, including computer program products, for propagation protection within a network. A management station sends an event message to a transparent network appliance, the event message comprising a command for the transparent network appliance to shape traffic being transmitted through the transparent network appliance. The management station receives statistical information from the transparent network appliance relating to the traffic being transmitted through the transparent network device.