The Suricata Engine is an Open Source Next Generation Intrusion
Detection and Prevention Engine. This engine is not intended to
just replace or emulate the existing tools in the industry, but
will bring new ideas and technologies to the field. This new Engine
supports Multi-threading, Automatic Protocol Detection (IP, TCP,
UDP, ICMP, HTTP, TLS, FTP and SMB! ), Gzip Decompression, Fast IP
Matching, and GeoIP identification.