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Intrusion Detection Systems Explained

   

Added on  2020-05-16

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Running Head: INTRUSION DETECTIONINTRUSION DETECTIONPROBLEM AND SIGNIFICANCE
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INTRUSION DETECTION1Table of ContentsIntroduction...........................................................................................................................................1Problem Statement................................................................................................................................2Relevance and Significance...................................................................................................................3Conclusion.............................................................................................................................................3References.............................................................................................................................................4
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INTRUSION DETECTION2IntroductionSecurity is crucial in computer system and viruses are major threats. Similarly, likeviruses intrusion is a worm. Intrusion is any unauthorized access that tries to intrude into theprivacy of network and penetrates the security system as a legitimate user. Nowadays, information is stored digitally instead of old-style storage method. Thus allorganization looks for security before sharing their valuable assets. It’s important to keep thatvaluable information safe from attackers Intrusion Detection System monitors system or network from malicious activities. Twopopular ID systems are Network Intrusion Detection System (NIDS) and Host IntrusionDetection System (HIDS). NIDS investigate the traffic from all devices on network and ifany abnormal behaviour is sensed, system administer is altered. HIDS is placed on a singlehost and look for the suspicious actions on a single host (Barnard, R 2018).IDS are beyond firewalls as firewall looks for intrusion and stop them from happening theyalso limit access between networks to prevent intrusions and do not give alter about an attackin the network wherein IDS are designed to look into data itself and watches for attack thatoriginate within the system (TechTarget, 2108). They can directly stop OS or bufferoverflows; can even look at application vulnerabilities. Intrusion Detection is basicallydesigned to get details of what’s going on network future allows or denies based on particularrules. Problem StatementFrom last few years, network attacks have increased thus IDS has become necessaryaddition to security infrastructure of most organisation. IDS detects weather a network inunder attack or not but cannot take actions automatically to prevent the failure. The mainconcern is to detect an intrusion as it happens and respond to it quickly (Beigh and Bashir,2013). But the problem occurs when some new kind of attack occur.There could be a problem if IDS incorrectly classifies some traffic as malicious can blocksvalid user from accessing the source. IDS deeply investigate the packet by accessing thepayload of each packet and aggregates network information.
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