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CompTIA® Security+™: Study Guide, Fifth Edition by Emmett Dulaney

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Understanding Intrusion Detection Systems

In the original Walking Tall movies, the sheriff puts small strips of clear tape on the hood of his car. Before getting in the vehicle, he would check the difficult-to-detect tape to see if it was broken—if it was, it tipped him off that someone had been messing beneath the hood, and that saved his life. Do you have clear tape on your network?

Intrusion detection systems (IDSs) are becoming integral parts of network monitoring. IDS is a relatively new technology, and it shows a lot of promise in helping to detect network intrusions. Intrusion detection (ID) is the process of monitoring events in a system or network to determine if an intrusion is occurring. An intrusion is defined as any activity or action ...

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