Systems and methods for detecting and preventing flooding attacks in a network environment

摘要

A method for processing network traffic data includes receiving a packet, and determining whether the packet is a previously dropped packet that is being retransmitted. A method for processing network traffic content includes receiving a plurality of headers, the plurality of headers having respective first field values, and determining whether the first field values of the respective headers form a first prescribed pattern. A method for processing network traffic content includes receiving a plurality of packets, and determining an existence of a flooding attack without tracking each of the plurality of packets with a SYN bit.

主权项

1. A method for processing network traffic data comprising:
receiving a packet to initiate a new session associated with an Internet Protocol (IP) address; taking into account the received packet, determining a rate R at which a number of sessions initiation packets N associated with the IP address are received within a time period t, where R=N÷t; storing, on a data storage device, a representation of the rate R; comparing the rate R with a prescribed session rate threshold T; allowing the packet to pass when the session rate threshold R is less than the prescribed session rate threshold T (R