Technique of defending against network flooding attacks...

Details Technique of defending against network flooding attacks... Technique of defending against network flooding attacks...

2011-01-18

2011-01-18

Tran, Ellen (Department: 2433)

Information security

Access control or authentication

Network

Reexamination Certificate

active

07873991

ABSTRACT:
The invention prevents server overload and possible server crippling due to a flooding of connectionless datagrams caused by intentional attack or otherwise. In response to a datagram from a host for a specified port, the number of datagrams already queued to the port from the host is determined. If this number exceeds a first threshold, the datagram is discarded. In the preferred embodiment, the threshold is determined by multiplying a percentage P by the number of available queue slots remaining for the port.

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