Glossary: Hardening, Firewalls and Intrusion Detection
Suricata
A free, open source IDS and IPS. Its rules start with an action (alert or drop) and match patterns. In IDS mode it detected Alex's SQL injection test but let it through.
Where the book teaches it
Related terms
IDS (intrusion detection system)IPS (intrusion prevention system)Signature-based detectionpcap