Quad9 vs Trellix Intrusion Prevention System: side-by-side comparison (2026)
Quad9 is a free intrusion detection and prevention systems solution. Trellix Intrusion Prevention System is a commercial intrusion detection and prevention systems solution by Trellix. Features, integrations, deployment and the company behind each one, side by side.
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A free DNS recursive service that blocks malicious host names and protects user privacy.
Next-gen IPS detecting & blocking network threats via signatures & behavior
Side-by-side comparison
Feature
Quad9
Trellix Intrusion Prevention System
Pricing model
Free
Commercial
Category
Intrusion Detection and Prevention Systems
Intrusion Detection and Prevention Systems
Deployment and fit
Deployment type
Cloud
Hybrid
Company size fit
Startup, SMB, Mid-Market, Enterprise
SMB, Mid-Market, Enterprise
Company
Company
–
Trellix
Use cases and capabilities
DNS Security
Yes
No
NDR
No
Yes
SSL
No
Yes
Signature Based Detection
No
Yes
Core features
10 features listed
10 features listed
Integrations
No integrations listed
3 integrations listed
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