Suricata is a network intrusion detection and prevention engine developed by the Open Information Security Foundation and its supporting vendors. The engine is multi-threaded and has native IPv6 support. It's capable of loading existing Snort rules and signatures and supports the Barnyard and Barnyard2 tools.
b8f5711f4c24627b056a3889b296b29ec515b34bc2287ad20d13ca20da777ff7