https://www.comparitech.com/net-admin/network-intrusion-detection-tools/
11 2018年的顶级入侵检测工具

https://opensourceforu.com/2017/04/best-open-source-network-intrusion-detection-tools/
最好的开源网络入侵检测工具

https://curlie.org/Computers/Security/Intrusion_Detection_Systems/Products_and_Tools/
电脑 安全 入侵检测系统 产品和工具

https://en.wikipedia.org/wiki/Intrusion_detection_system

入侵防御系统（IPS） intrusion prevention systems (IPS)
入侵检测系统（IDS） Intrusion Detection Systems (HIDS)
主机入侵检测系统（HIDS）Host Intrusion Detection Systems (HIDS)
网络入侵检测系统（NIDS）Network Intrusion Detection Systems (NIDS)

基于签名的IDS  Signature based IDS
基于异常的IDS  Anomaly based IDS
被动IDS  Passive IDS
反应性IDS  Reactive IDS

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  IDS HIDS/NIDS Unix Linux Windows Mac OS  
1 Snort NIDS Yes Yes Yes No 思科创建
2 OSSEC HIDS Yes Yes Yes Yes  
3 Suricata NIDS Yes Yes Yes Yes Snort的替代品
4 Bro NIDS Yes Yes No Yes  
5 Sagan Both Yes Yes No Yes OSSEC的替代品
6 Security Onion Both No Yes No No  
7 AIDE HIDS Yes Yes No Yes  
8 Open WIPS-NG NIDS No Yes No No  
9 Samhain HIDS Yes Yes No Yes  
10 Fail2Ban HIDS Yes Yes No Yes  

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Snort | www.snort.org
OSSEC | ossec.github.io
Suricata | suricata-ids.org
Bro | www.bro.org
Sagan |
Security Onion | securityonion.net
AIDE | aide.sourceforge.net
Open WIPS-NG | www.openwips-ng.org
Samhain |
Fail2Ban |
Tripwire | github.com/Tripwire/tripwire-open-source