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Businesses today must strike a careful balance between stronger access controls and uninterrupted availability. As Zero Trust adoption accelerates, many organizations are discovering that while identity and access strategies are evolving, critical gaps at the network edge remain.
This is where Zero Trust Admission Control (ZTAC) comes in.
In this blog, I’ll share how we approach ZTAC at Corero, what we see organizations struggling with in real-world environments, and why this capability is a natural extension of Corero’s Business Continuity platform—focused on keeping services available, users productive, and operations running without disruption.
Why Traditional Zero Trust Still Leaves Gaps at the Edge
Zero Trust frameworks do an excellent job of validating identity and enforcing access policies. However, not every system fits neatly into a ZTNA architecture. VPN concentrators, authentication services, application portals, and legacy systems often remain directly exposed to the internet.
These systems quickly become prime targets for credential abuse, brute-force attacks, and authentication of floods designed to exhaust resources.
ZTAC as Part of Corero’s Business Continuity Platform
At Corero, we protect what matters most: business continuity. ZTAC extends Corero’s platform by protecting authentication and access workflows at the edge, using real-time telemetry and automated enforcement to stop attacks before availability is impacted.
Real-World Scenario: Protecting Healthcare Access
ZTAC has been deployed in healthcare environments where authentication-based attacks prevented clinicians from accessing EMR and HR systems. By ingesting real-time authentication logs, ZTAC automatically blocks malicious traffic while allowing legitimate users to maintain access.
Stateless Protection That Scales
ZTAC uses a stateless architecture to enforce protection at scale without overloading VPNs, firewalls, or identity systems—avoiding costly infrastructure upgrades.
Talk to a Specialist About Business Continuity
ZTAC works alongside existing Zero Trust investments to close availability gaps without adding complexity.
