A Comparative study on different port identification technology

Hostility attack flooding in Internet is that there is little port identification mechanism. In most cases the person who have behave maliciously will not be found and to be punished, so the network attack is coming in thick and fast. The port identification technology is very important to improve the network security. This is one of the reasons why there is few DDoS attack in PSTN The key technology is to realize the physical location of attacker and port identification on different layer. This paper introduces some methods of port identification and compare them.