INTRUSION DETECTION SYSTEMS

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Presentation transcript:

INTRUSION DETECTION SYSTEMS Manuel Martinez ISSC342 D001

OUTLINE History Network-Based Intrusion Detection Systems Host-Based Intrusion Detection Systems Distributed Intrusion Detection Systems

HISTORY OF IDS

Network-Based Intrusion Detection Systems www.windowsecurity.com

Network-Based Intrusion Detection Systems It monitors a network segment or several hosts through one network. Listens all traffic in the network segment. NIDS can see the “big picture” concerning network-based attacks; It does not work well in switched and ATM networks. If the IDS cannot monitor all traffic it will be overloaded and eventually crash.

Host-Based Intrusion Detection Systems www.windowsecurity.com

Host-Based Intrusion Detection Systems HIDS NIC does not work on promiscuous mode; it only listens to the traffic destined for the NIC's specific. HIDS can analyze data after it has been decrypted. HIDS disadvantages is that only monitors only one system. It requires more man power to administer each system.

Distributed Intrusion Detection Systems

Distributed Intrusion Detection Systems DIDS can be: Signature-based. This method uses known patters to identify attacks. Anomaly-based. What is not considered normal is regarded as malicious. DIDS can be composed of various sensors: HIDS, NIDS or a combination of both.