Many of computing environments are going to be networked, so security problem goes to be buzzwords. Nowadays EC (Electronic Commerce) like Cyber trading, Cyber banking is coming out and spread widely, but this mechanism without security enhancement can be compromised by malicious hacker via several hacking methods as known as data sniffing, man-in-middle attack.
There is several methods to protect private data or important business data from hackers. At the view of system security, building a firewall and network -based intrusion detection system, applying ACL to router can enhance network security. And applying security patches or building host-based Intrusion detection system can be a method of enhancing system security.
At the view of data security, encrypting transmit data can block data sniffing and secure data integrity.
These methods can be used for misuse detection but still have a weakness to detect anomaly. Also, these methods can only block unauthorized outside hacker.
In this paper, I will suggest a methodology for improving intrusion detection system for anomaly detection and implement new anomaly detection module.
