A Study on the IP Spoofing Attack through Proxy Server and Defense Thereof

Because it is impossible to find attacker's real IP address in hacking attacks against Korean users from other countries although the tracking method is used, investigators thereof have great difficulty. This is because attackers use the IP spoofing method to conceal their IP address while they go through a plurality of proxy servers. This study aims to examine how attackers use the IP spoofing method, and apply the proxy servers to attempt attacks. This study suggests a method of defending users against IP spoofing attacks through proxy servers, and a method of IP traceback, and will contribute to technical development for global hacking and security defense technology.