What are Intrusion Detection Systems?

Intrusion Detection Systems (IDS) are a necessary part of any strategy for enterprise security. What are Intrusion Detection systems? CERIAS, Center for Education and Research in Information Assurance and Security, defines it this way:

"The purpose of an intrusion detection system (or IDS) is to detect unauthorized access or misuse of a computer system. Intrusion detection systems are kind of like burglar alarms for computers. They sound alarms and sometimes even take corrective action when an intruder or abuser is detected.

Many different intrusion detection systems have been developed but the detection schemes generally fall into one of two categories, anomaly detection or misuse detection.

Anomaly detectors look for behavior that deviates from normal system use. Misuse detectors look for behavior that matches a known attack scenario. A great deal of time and effort has been invested in intrusion detection, and this list provides links to many sites that discuss some of these efforts."

There is a sub-category of intrusion detection systems called network intrusion detection systems (NIDS). These systems monitor packets on the network wire and looks for suspicious activity. Network intrusion detection systems can monitor many computers at a time over a network, while other intrusion detection systems may monitor only one.

Recommended Resources

Go to Registry Easy to Download a Free Registry Scan!

Windows Registry Facts - Windows Registry Facts provides you with information to help you make an informed decision about purchasing a registry cleaner. After extensive research on the leading registry cleaners, we have listed detailed information about some of the top products available. Find the perfect registry cleaner for you, and watch the performance of your PC improve!