Patent ID: 7873991
Filing Date: 2011-01-18
Classification: H04L

Abstract:
1. A method of preventing a flooding attack on a network server in which a large number of connectionless datagrams are received for queuing to a port on the network server, comprising: determining, in response to the arrival of a connectionless datagram from a host for a port on the network server, if the number of connectionless datagrams already queued to the port from the host exceeds a prescribed threshold, further comprising calculating the prescribed threshold by multiplying a percentage by the number of available queue slots for the port; discarding the datagram, if the number of connectionless datagram already queued to the port from the host exceeds the prescribed threshold; and queuing the connectionless datagram to a queue slot of the port, if the number of connectionless datagrams already queued to the port from the host does not exceed the prescribed threshold.