VIRTUAL SERVER AND METHOD FOR ZOMBIE IDENTIFICATION, SINK HOLE SERVER AND METHOD FOR INTEGRALLY MANAGING ZOMBIE INFORMATION BASED ON VIRTUAL SERVER

摘要

PROBLEM TO BE SOLVED: To interrupt any malignant act due to a bot such as a DDoS attack.;SOLUTION: This virtual server includes: an authentication processing module 220 for, when any cookie is not included in a Web server connection request message received form a host, authenticating the host by using an automatic connection prevention (CAPTCHA) test, and for providing a cookie to the authenticated host; a cookie value verification module 240 for, when the cookie is included in the Web server connection request message, extracting a cookie value from the Web server connection request message, and for verifying the extracted cookie value; a Web page connection guiding module 250 for, when the verification of the cookie value is successful, guiding the host to be connected to the Web server; and a zombie identification module 260 for, when the verification of the cookie value is unsuccessful, interrupting the connection of the host, and for, when the number of times of interruption exceeds a critical value, identifying the host as a zombie.;COPYRIGHT: (C)2012,JPO&INPIT