RESPONSE WATERMARK GENERATING/INSERTING APPARATUS FOR TRACING BACK CONNECTION ATTACK AND METHOD THEREFOR

摘要

PURPOSE: A response watermark generating/inserting apparatus for tracing back connection attack and a method therefor are provided to easily trace back a packet by inserting a watermark capable of discrimination into contents of a response packet of a damage system hacked by a hacker. CONSTITUTION: A packet check module(10) receives all packets through a network interface card(S1), and performs a test for searching a response packet corresponding to a damage system among the received packets. A watermark generating module(20) provides the response packet searched by the packet check module(10), and generates a packet watermark corresponding to the response packet. A watermark inserting module(30) inserts the packet watermark into a TCP(Transmission Control Protocol) data region in the response packet provided by the watermark generating module(20). A watermark packet transmitting module(40) transmits the packet provided from the watermark inserting module(30) through a network interface card(S2).