METHOD AND APPARATUS FOR PREVENTING DISTRIBUTED DENIAL OF SERVICE ATTACK

摘要

An apparatus for preventing a distributed denial of service (DDoS) attack transmits a redirect message containing a redirect URL (Uniform resource Locator) to a client terminal that has transmitted a request for accessing a web server, in place of the web server. The apparatus authenticates the client terminal that re-sends the request for accessing the web server as a normal client terminal, and permits the client terminal to access the web server.

主权项

1. An apparatus for preventing a distributed denial of service (DDoS) attack, the apparatus comprising:
a communication unit configured to receive a packet of a request for accessing a web server from a client terminal in place of the web server; a packet processing unit configured to analyze the received packet and extract packet information including at least one of internet protocol (IP) address and hypertext transfer protocol (HTTP) protocol information from the received packet; and a control unit configured to check the IP address of the client terminal using the extracted information, provide a redirect message containing a redirect URL (Uniform resource Locator) to the client terminal, authenticate the client terminal that has re-sent the request for accessing the web server to the redirect URL as a normal client terminal, and permit the client terminal to access the web server.