Research Of Intrusion Detection System Based On The SME Network

The IDS is a proactive security protection technology, It can monitor the host system or network user's activities. It can discover the possible intrusions . It can timely detect the user's misoperation, the outer and inner intrusions.In this paper, the research environment is the choice enterprise networks, there are the Broad Bands, many computers, many users in the choice enterprise networks, and they are the bases of the Denial of Services. Then, aiming at the characters of campus network security and familiar Denial of Services, the network abnormal intrusion detection system based on the monitoring of network's abnormal flux was advanced.The system has been finished, Collecting Data is the base of system, it provides the necessary information for Analyzing Data, Analyzing Data is the most important part in the system; it analyzes the abnormal flux of network, and calculates the degree of abnormity. When the value of abnormity is bigger than the threshold, Analyzing Data mainly raise the alarm and give the particular information of alarm to Analyzing Abnormity. Analyzing Abnormity analyzes the particular information of alarm by the particular arithmetic, and judges the true intrusions.In the environment of campus, the author have tested the system, the system has ideal functions of detecting. I get a lot of important information of network by the system; I believe that I will benefit from them in the future.