Which Intrusion Detection System is the best applicable for large environments where critical assets on the network need extra security and is ideal for observing sensitive network segments?

Honeypots are deception traps designed to lure and study attackers, not a detection system for monitoring and protecting production network segments.

Firewalls enforce access control policies by allowing or blocking traffic; they do not perform deep inspection or alert on intrusion patterns the way an IDS does.

NIDS passively inspects packet traffic flowing through a network segment by connecting to a span port or tap, allowing a single sensor to protect many hosts simultaneously. This design is ideal for large environments because it provides broad visibility without requiring agents on every machine, and it can be strategically placed on segments carrying sensitive traffic such as those serving critical assets.

HIDS agents run on individual hosts and monitor local activity such as file integrity and log events; they cannot observe broad network segment traffic and do not scale efficiently across large environments.