Intrusion Detection
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Snort
Snort - Open Source Intrusion Detection
As the most widely deployed intrusion prevention technology in the world, Snort has earned the right to call itself "the de facto standard for intrusion prevention/detection." It performs real-time analysis to detect buffer overflows, stealth port scans, CGI attacks, SMB probes, OS fingerprinting attempts, and other attacks. Operating System: Linux, Unix, BSD, Mac OS X.
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AFICK
AFICK- Open Source Intrusion Detection
Short for "Another File Integrity Checker," AFICK monitors changes to your file systems in order to alert you to possible intrusion. If you're familiar with Tripwire, AFICK will look and feel very familiar. Operating System: Windows, Linux, Unix.
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Snort_inline
Snort_inline - Open Source Intrusion Detection
This modified version of Snort uses iptables instead of libpcap. Operating System: FreeBSD, Linux.
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