System and method for detecting and preventing security

Details System and method for detecting and preventing security System and method for detecting and preventing security

1997-01-09

1998-09-08

Decady, Albert

G06F 1100

Patent

active

058058010

ABSTRACT:
A system and method for providing security against intrusion in a campus LAN network is provided. A managed hub discovers each interconnect device in the network that supports the security feature and maintains an interconnect device list of such devices, which may include token ring switches, Ethernet switches, bridges and routers. The managed hub detects an intrusion by an unauthorized address on one of its ports and notifies the interconnect devices of the intrusion by transmitting a security breach detected frame. The interconnect devices set a filter on their respective ports against the intruding unauthorized address. The interconnect devices send a filter set frame to the managed hub which reenables the port where the security intrusion occurred, after all filter set frames are received. A network management station sends a security clear condition frame to remove the filters.

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