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Top 6 Free Network Intrusion Detection Systems (NIDS) Software | UpGuard

ID: 97765c5a-1c87-5621-b790-f186ab58d90f

STIX ID: report--97765c5a-1c87-5621-b790-f186ab58d90f

Feed Name: UpGuard Blog

Date Published: 2024-01-22

Date Updated: 2026-05-01

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This document is an explanatory guide on Network Intrusion Detection Systems (NIDS), covering their purpose, differences from Host IDS (HIDS), signature- versus anomaly-based detection, recommended free/open-source NIDS (Snort, Suricata, Zeek, OpenWIPS-ng, Sguil, Security Onion), and common advantages and limitations when deploying NIDS in enterprise environments.

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