Intrusion detection system(NIDS) - Sax2 - Version 2.0 Ax3soft Sax2 is a professional intrusion detection and response system that performs real-time packet capturing, 24/7 network monitoring, advanced protocol analyzing and automatic expert detection. By giving you insights into all of your network's operations, Sax2 makes it easy to isolate and solve network problems, identify network bottleneck and bandwidth use, detect network vulnerabilities and discovered the network whether there is a breach of security strategy and the signs of being attacked in the network of hazard, and then intercept and stop before their invasion. Network administrators can directly monitor http requests, email messages, ftp transfers, as well as real-time activities and message details for the two popular instant messengers: MSN and QQ. Sax2 is designed to be used by both IT professionals and novice users. Problems are clearly identified, and solutions are suggested in understandable terms. Whether you're a network administrator who needs to identify, diagnose, and solve network problems quickly, an IT professional who wants to monitor user