1)   Nayatel IDS Beta-2.0
Network based intrusion Detection system that automatically detects any intruders who are attempting to intrude the network on which it is working.
Intrusion Detection System,

 2)   Sax2 Intrusion detection system(Free) 3.0
Ax3soft Sax2 is a professional intrusion detection and prevention system that performs real-time packet capturing, 24/7 network monitoring, advanced protocol analyzing and automatic expert detection.
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