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Snort is a lightweight network intrusion detection 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 ... [More] port scans, CGI attacks, SMB probes, OS fingerprinting attempts, and much more. Snort uses a flexible rule based language to describe traffic that it should collect or pass, and a modular detection engine. Snort has a real-time alerting capability, with alert mechanisms for syslog, a user specified file, a UNIX socket, or WinPopup messages to Windows clients using Samba's smbclient. [Less]

Toy Network Simulator

Developed under Microsoft Visual Studio 2010/12/13 and .Net Framework 4.0/4.5 for Windows XP and later, but also successfully demonstrated under Mono for Linux. The application can fully process a wide selection of PCAP NG, PCAP and NA Sniffer packet captures and can fully unpack a range of frames ... [More] , packets and datagrams therein, but the unpacked data is not utilised in the configured version of the code. Without additional knowledge of the structure of the messages, the application cannot handle multiple messages within a TCP packet. The code can perform latency analysis for packet round trips across a network and analysis for time messages on a network Histograms and CSV files can be output for the latency and time analysis results [Less]