Network host isolation tool

Details Network host isolation tool Network host isolation tool

2005-01-13

2008-12-09

Pezzlo, John (Department: 2619)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C370S230000, C370S400000, C709S238000

Reexamination Certificate

active

07463593

ABSTRACT:
The present invention provides a method, system, and computer program product for quickly and automatically blocking a plurality of computer systems in response to detection of a widespread vulnerability or software infection. The method comprises: providing a list of Internet Protocol (IP) addresses corresponding to a plurality of devices to be blocked in a network; and for each IP address in the list: determining a router in the network connected to the IP address; determining a layer-2 Media Access Control (MAC) address associated with the IP address; and applying a CAM filter to a core switch associated with the router to block communication from the device corresponding to the IP address, at the core switch; wherein the blocking of the plurality of devices occurs automatically in response to the provision of the list of IP addresses.

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