Intrusion detection software is meant to monitor network traffic or host activities for malicious actions, such as successful or unsuccessful intrusion attempts, hostile traffic (i.e., malicious scans and denials of service), unauthorized configuration changes, malware symptoms, and user policy violations. An intrusion detection system (IDS) typically can produce reports describing the details of the potentially hazardous activity which generated alerts. OSSEC is particularly useful in this context for many reasons. First, it is an established, reputable product with a proven track record (OSSEC was first released in 2004 and has been owned by Trend Micro since 2009). Second, it is free and open source. Third, it is compatible with most modern operating systems such as Linux, Windows (Server 2008, Server 2003, 7, Vista, XP, 2000) BSD (Free/Open/Net), Unix (Solaris, HP-UX, AIX), and MacOS.
One of the key tenets of IT security is to keep intruders from gaining access…
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