VIRTUAL SERVER AND METHOD FOR IDENTIFYING ZOMBIES AND SINKHOLE SERVER AND METHOD FOR MANAGING ZOMBIE INFORMATION INTEGRATELY BASED ON THE VIRTUAL SERVER

摘要

PURPOSE: A virtual server and method for zombie discrimination and a sinkhole server and method for managing zombie information in an integrated way based on the virtual server are provided to utilize the virtual server, thereby discriminating zombie hosts which are abnormally connected to a web server. CONSTITUTION: An authentication process module(220) certifies a host using an automatic access prevention test. The authentication process module supplies a cookie to the certified host. A cookie value verification module(240) verifies a detected cookie value by extracting the cookie value from a web server access request message. A web page access induction module(250) induces access to a web server of the host in a case of cookie value verification success. A zombie discrimination module(260) blocks the access of the host in a case of cookie value verification failure. The zombie discrimination module identifies the host as a zombie when the number of blockings exceeds a critical value.