Network Security
OT Security
Our platform for safe networking, identity and access control keeps your equipment up and always running – on-prem or cloud-based, for high-security localised or distributed sites.
Protect Your Operations.
Maximise Availability.
When continuity is critical, Clavister solutions for OT security protect your operations from cyber threats. Our platform for safe networking, identity and access control keeps your equipment up and always running – on-prem or cloud-based, for high-security localised or distributed sites.
OT security is an exercise in balancing competing priorities. Production systems must remain continuously available, yet resilient against cyber threats. Access to critical assets must be tightly controlled, while remote users still need secure and reliable connectivity.
Whether supporting energy, utilities, manufacturing or other critical infrastructure, OT environments depend on industrial control systems (ICS), SCADA platforms, PLCs, and other operational technologies to keep essential processes running. Many of these systems remain in service for decades and cannot always be patched, upgraded, or replaced without impacting operations. As connectivity expands across enterprise networks, remote users, cloud services, and distributed sites, organisations must secure industrial communications and critical assets while preserving availability, safety, and operational continuity.
The Clavister cybersecurity platform delivers a unified approach to OT security, combining network protection, secure connectivity, segmentation, and identity-based access control. The result is consistent security across plants, remote sites, and IT/OT environments without compromising operational continuity.
Solution areas
OT Boundary Protection
The challenge
Connectivity can make OT systems more efficient, visible and available to remote users. But opportunity comes at a price. While the convergence of OT and IT systems can increase your operational efficiency, it also increases the attack surface. You need to enable essential communications without exposing critical operations
The Solution
Clavister NetWall lets you establish secure boundaries at the next level. Capabilities like DPI with OT protocol awareness, possibility of working in transparent mode and fully on-prem options make NetWall OT native. The result is secure connectivity and increased software stability that protects uptime.
The benefits
Allow only approved users, devices, and services to access critical operational environments.
Reduce exposure by enforcing least-privilege communications between enterprise and OT networks.
Withstand harsh environments using ruggedised hardware options, ready for rack mounting.
Maintain protection through centralised management that keeps boundaries secure and policies consistent.
OT Network Segmentation
The Challenge
OT networks were built to operate, not to contain cyber threats. As these systems become increasingly interconnected to enterprise systems, incidents can quickly spread across production environments. Organisations need a practical way to limit lateral movement and protect critical assets.
The Solution
Clavister NetWall helps you divide OT environments into clearly defined security zones, protecting legacy software and sensitive OT protocols without having to rebuild everything. Using transparent firewalling, OT protocols recognition and filtering only authorised communications are allowed between zones. This reduces unnecessary connectivity, limits lateral movement and helps contain incidents.
The benefits
Limit lateral movement by restricting communications between production systems, zones, and assets.
Protect legacy and sensitive equipment without requiring endpoint agents or system changes.
Keep control in all conditions with ruggedised hardware options and bypass functionality.
Simplify compliance with zone separation that supports IEC 62443 and other industrial security frameworks.
Secure Distributed OT
The challenge
Distributed OT sites often use different communications links, have limited local staff and rely on remote supervision. Remote OT still has to operate when central systems or WAN links are unavailable. Security controls must use encrypted connectivity and retain local policy enforcement rather than depending on permanent cloud or manager reachability.
The Solution
Clavister NetWall protects the local OT zone and establishes encrypted site connectivity over available WAN infrastructure. Clavister InControl enables zero-touch deployment and provides centralised policy, revision, backup and operational oversight, while each Clavister NetWall continues to enforce its approved local security policy.
The benefits
Set policy once across remote sites instead of managing each location as a separate security island.
Encrypt site communications and restrict which endpoints and services are allowed through each conduit.
Scale with less effort using zero-touch deployment and centralised management.
Maintain local enforcement even when the central manager or WAN connection is unavailable.
Secure Remote Access
The Challenge
Remote maintenance, monitoring, and third-party support are essential to modern industrial operations. However, traditional VPN-based access often grants broader network access than required, increasing the risk of unauthorised access, lateral movement and compromised credentials. Organisations need to enable secure remote access without exposing critical OT assets.
The Solution
Clavister combines secure access, identity verification and policy enforcement in a unified Zero Trust architecture. Clavister OneConnect establishes encrypted connections to your resources, while Clavister IdAuth and OneID verify users using modern MFA/SSO authentication. Clavister NetWall enforces granular access policies, with centralised management keeping protection consistent.
The benefits
Reduce complexity with identity management, secure access and network security from one vendor.
Minimise potential damage by enforcing least-privilege access across networks.
Enhance user experience with one consistent, secure, and intuitive route to access.
Avoid costly redesigns by adding identity-based Zero Trust access without rebuilding infrastructure.
Related Products
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NetWall
The versatile next-generation firewalls, engineered to protect diverse environments. Clavister NetWall delivers strong threat prevention, secure connectivity and reliable performance for enterprises, public organisations and industrial deployments.
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IdAuth
Clavister IdAuth provides accessible, robust MFA that integrates easily with existing environments, delivering stronger security and simplified authentication for both public and private sector organisations without adding complexity.
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