Snort – Network Intrusion Detection and Prevention System

A NIDS (Network Intrusion Detection Systems) is a system for monitoring the network traffic to identify patterns of potentially hostile packages in response that can be carried out certain actions (notification via email, closing a connection, logging on a database).

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Snort is an open source network intrusion prevention system, capable of performing real-time traffic analysis and packet logging on IP networks. It can perform protocol analysis, content searching/matching, and can be used to detect a variety of attacks and probes, such as buffer overflows, stealth port scans, CGI attacks, SMB probes, OS fingerprinting attempts, and much more.

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