The Research Of Operating System Security On Intrusion Detection System

With the rapid grown up, The networks play more and more important roles in society. Since some faults in it, the Internet is naturely rare of security. The number of network attacks and intrutions raised up in the recent years.Firewall is an important technology that is used to prevent network intrusion. But only firewall is not enough for some special occasions. The network intrustion detection system (NIDS) is now being an important technology to guarantee the security. The NIDS detect the network problems such as illegal gaining, modifying, replaying, imitating, intrusing and DDoS by collecting packages in the networks and running status of the operating system and judging the information. Based on the NIDS, the TDNIDS (Tianda Network Intrusion Detection System) also focus on the research of Intrusion Reaction System to improve the ability of detecting and reacting to the network intrusion.In the TDNIDS, all the detecting the reacting nodes are running on some general operating systems. To ensure the security of the operating systems is very essential for the TDNIDS. What's more, it is also necessary for collecting the running status information of the operating systems. UNIX and Linux are widely used in network servers and key nodes. UNIX and Linux had been used for several years and had some security problems. In the article, these security problems are listed and the steps to resolve the problems are mentioned.