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]
Suricata is an open source Intrusion Detection and Prevention (IDS/IPS) engine. Suricata is developed by the Open Information Security Foundation and its supporting vendors. The engine is multi-threaded, has native IPv6 support, file extraction capabilities and many more features. It's capable of
... [More] loading existing Snort rules and signatures and supports many frontends through Barnyard2. [Less]
PCGUI is a frontend to handle packet captures. Its aim is for Network Security Analysts who wants to have a non-commercial cheap storage for doing Network Forensics.
It can uses daemonlogger/tcpdump/sancp for packet capturing and cxtracker for connection profiling.
daemonlogger/tcpdump/sancp
... [More] is responsible for dumping pcaps to disk. cxtracker/sancp indexes connections, making them searchable. LAMP is used for GUI. to search up connections and carving out relevant pcaps. [Less]
Barnyard2 offloads output processing of your IDS alert files to a dedicated process, minimizing dropped packets in the IDS itself. It parses unified2 files.
OpenUTM is an open source Unified Threat Management software framework to be used to combine together other open source projects to build an easily managed UTM firewall appliance.
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