Intrusion Shield is a commercial intrusion detection and prevention systems solution by Intrusion. OpenText Core DNS Protection is a commercial intrusion detection and prevention systems solution by OpenText Cybersecurity. Features, integrations, deployment and the company behind each one, side by side.
Network threat protection platform blocking malicious IPs using reputation intelligence.
Cloud-native DNS filtering solution that blocks malicious domains and threats
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Based on what each listing shows: deployment, company size, price and open source.
Intrusion Shield fits if you need both cloud and on-premises options.
OpenText Core DNS Protection fits if you want a cloud product.
Common questions when comparing Intrusion Shield vs OpenText Core DNS Protection for intrusion detection and prevention systems.
Intrusion Shield: Network threat protection platform blocking malicious IPs using reputation intelligence, built by Intrusion.
OpenText Core DNS Protection: Cloud-native DNS filtering solution that blocks malicious domains and threats, built by OpenText Cybersecurity.
The table above shows where their features, integrations, deployment and company size fit differ.
Intrusion Shield is made by Intrusion. OpenText Core DNS Protection is made by OpenText Cybersecurity. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Intrusion Shield and OpenText Core DNS Protection are both Intrusion Detection and Prevention Systems products. Use the table above to see where features, deployment and company size fit differ.
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Updated 2026-11-01
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