Abstract: The present invention relates to an apparatus and method of securing a network. In the present invention, a pattern matching engine 210 corresponding to a first security module initially performs a hardware-based filtering process for a static attack of an input network packet and transmits a normal packet determined to be normal as a result of the filtering to a dynamic attack detection module 230 corresponding to a second security module through a PL3 interface. The dynamic attack detection module 230 performs a hardware-based filtering process for a dynamic attack of the normal packet transmitted from the pattern matching engine 210. The dynamic attack detection module 230 transmits the filtering result to a main CPU 400 through a PCI 300 if filtering the dynamic attack is completed. Then, a main CPU 400 transmits a response policy based on the transmitted filtering result to a response engine 220 through the PCI 300 and the dynamic attack detection module 230 to block an abnormal packet.

Abstract: The present invention relates to a multiple host-based network security device and a method for processing packet data using the network security device. The multiple host-based network security device of the present invention comprises at least two individual hosts in a single host system. Each of the individual hosts comprises individual resources such as a central processing unit (CPU) and a memory, and performs a different task in a single host system. The network security device comprises a packet policy module for providing a packet classification policy such that packet data are sent properly to the individual hosts, and a packet processing unit for sending the packet data to a relevant individual host according to the packet classification policy and providing services or blocking the packet data in accordance with packet checking results performed in the individual hosts. Thus, the data processing performance can be improved and the packet data can be stably checked.

Abstract: Disclosed herein is a network security system and method. The network security system includes a packet-dedicated processor for primarily performing hardware filtering on static attacks of network traffic, and a host system provided with a software filter for secondarily performing software filtering on dynamic attacks of network traffic. In the network security method, hardware filtering is performed on static network traffic attacks, software filtering is performed on dynamic network traffic attacks based on an analysis the results of the hardware filtering and packet streams generated by incoming packets for a predetermined time, and intrusion prevention information is provided to an administrator based on the accumulation and an analysis of the results of the software filtering.