Chapter 11 Intrusion Detection System
Chapter 11 Intrusion Detection System
Chapter 11 Intrusion Detection System
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Detecting Attack Strings Scanning for a signature in each packet is not enough¡ attacker can split attack string into several packets, will defeatstateless NIDS Recording just previous packet’s text is not enough¡ attacker can send packets out of order Attacker can use TCP tricks so that certain packets areseen by NIDS but dropped by the receiving applicationSecurity Spring 2013
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